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MEAM_LAMMPS_KimJungLee_2010_FeNbC__MO_072689718616_002

Interatomic potential for Carbon (C), Iron (Fe), Niobium (Nb).
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Title
A single sentence description.
MEAM Potential for the Fe-Nb-C system developed by Kim and Lee (2010) v002
Citations

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Description
A short description of the Model describing its key features including for example: type of model (pair potential, 3-body potential, EAM, etc.), modeled species (Ac, Ag, ..., Zr), intended purpose, origin, and so on.
Interatomic potentials for Fe-Nb-C systems has been developed based on the previously developed MEAM potentials for lower order systems. According to the paper (Kim et al, Journal of Materials Research, 25(7), 2010), the potentials reproduce various fundamental physical properties (structural properties, elastic properties, thermal properties, and surface properties) in generally good agreement with higher-level calculations or experimental information.
Species
The supported atomic species.
C, Fe, Nb
Disclaimer
A statement of applicability provided by the contributor, informing users of the intended use of this KIM Item.
None
Content Origin http://cmse.postech.ac.kr/home_2nnmeam
Contributor Donghyuk Seol
Maintainer Donghyuk Seol
Developer Hyun-Kyu Kim
Woo-Sang Jung
Byeong-Joo Lee
Published on KIM 2023
How to Cite

This Model originally published in [1] is archived in OpenKIM [2-5].

[1] Kim H-K, Jung W-S, Lee B-J. Modified embedded-atom method interatomic potentials for the Nb-C, Nb-N, Fe-Nb-C, and Fe-Nb-N systems. Journal of Materials Research. 2010;25(7):1288–97. doi:10.1557/JMR.2010.0182 — (Primary Source) A primary source is a reference directly related to the item documenting its development, as opposed to other sources that are provided as background information.

[2] Kim H-K, Jung W-S, Lee B-J. MEAM Potential for the Fe-Nb-C system developed by Kim and Lee (2010) v002. OpenKIM; 2023. doi:10.25950/36c8c978

[3] Afshar Y, Hütter S, Rudd RE, Stukowski A, Tipton WW, Trinkle DR, et al. The modified embedded atom method (MEAM) potential v002. OpenKIM; 2023. doi:10.25950/ee5eba52

[4] Tadmor EB, Elliott RS, Sethna JP, Miller RE, Becker CA. The potential of atomistic simulations and the Knowledgebase of Interatomic Models. JOM. 2011;63(7):17. doi:10.1007/s11837-011-0102-6

[5] Elliott RS, Tadmor EB. Knowledgebase of Interatomic Models (KIM) Application Programming Interface (API). OpenKIM; 2011. doi:10.25950/ff8f563a

Click here to download the above citation in BibTeX format.
Funding Not available
Short KIM ID
The unique KIM identifier code.
MO_072689718616_002
Extended KIM ID
The long form of the KIM ID including a human readable prefix (100 characters max), two underscores, and the Short KIM ID. Extended KIM IDs can only contain alpha-numeric characters (letters and digits) and underscores and must begin with a letter.
MEAM_LAMMPS_KimJungLee_2010_FeNbC__MO_072689718616_002
DOI 10.25950/36c8c978
https://doi.org/10.25950/36c8c978
https://commons.datacite.org/doi.org/10.25950/36c8c978
KIM Item Type
Specifies whether this is a Portable Model (software implementation of an interatomic model); Portable Model with parameter file (parameter file to be read in by a Model Driver); Model Driver (software implementation of an interatomic model that reads in parameters).
Portable Model using Model Driver MEAM_LAMMPS__MD_249792265679_002
DriverMEAM_LAMMPS__MD_249792265679_002
KIM API Version2.2
Potential Type meam
Previous Version MEAM_LAMMPS_KimJungLee_2010_FeNbC__MO_072689718616_001

(Click here to learn more about Verification Checks)

Grade Name Category Brief Description Full Results Aux File(s)
P vc-species-supported-as-stated mandatory
The model supports all species it claims to support; see full description.
Results Files
P vc-periodicity-support mandatory
Periodic boundary conditions are handled correctly; see full description.
Results Files
P vc-permutation-symmetry mandatory
Total energy and forces are unchanged when swapping atoms of the same species; see full description.
Results Files
A vc-forces-numerical-derivative consistency
Forces computed by the model agree with numerical derivatives of the energy; see full description.
Results Files
F vc-dimer-continuity-c1 informational
The energy versus separation relation of a pair of atoms is C1 continuous (i.e. the function and its first derivative are continuous); see full description.
Results Files
P vc-objectivity informational
Total energy is unchanged and forces transform correctly under rigid-body translation and rotation; see full description.
Results Files
P vc-inversion-symmetry informational
Total energy is unchanged and forces change sign when inverting a configuration through the origin; see full description.
Results Files
P vc-memory-leak informational
The model code does not have memory leaks (i.e. it releases all allocated memory at the end); see full description.
Results Files
P vc-thread-safe mandatory
The model returns the same energy and forces when computed in serial and when using parallel threads for a set of configurations. Note that this is not a guarantee of thread safety; see full description.
Results Files
P vc-unit-conversion mandatory
The model is able to correctly convert its energy and/or forces to different unit sets; see full description.
Results Files


BCC Lattice Constant

This bar chart plot shows the mono-atomic body-centered cubic (bcc) lattice constant predicted by the current model (shown in the unique color) compared with the predictions for all other models in the OpenKIM Repository that support the species. The vertical bars show the average and standard deviation (one sigma) bounds for all model predictions. Graphs are generated for each species supported by the model.

Species: C
Species: Fe
Species: Nb


Cohesive Energy Graph

This graph shows the cohesive energy versus volume-per-atom for the current mode for four mono-atomic cubic phases (body-centered cubic (bcc), face-centered cubic (fcc), simple cubic (sc), and diamond). The curve with the lowest minimum is the ground state of the crystal if stable. (The crystal structure is enforced in these calculations, so the phase may not be stable.) Graphs are generated for each species supported by the model.

Species: Nb
Species: Fe
Species: C


Diamond Lattice Constant

This bar chart plot shows the mono-atomic face-centered diamond lattice constant predicted by the current model (shown in the unique color) compared with the predictions for all other models in the OpenKIM Repository that support the species. The vertical bars show the average and standard deviation (one sigma) bounds for all model predictions. Graphs are generated for each species supported by the model.

Species: Fe
Species: C
Species: Nb


Dislocation Core Energies

This graph shows the dislocation core energy of a cubic crystal at zero temperature and pressure for a specific set of dislocation core cutoff radii. After obtaining the total energy of the system from conjugate gradient minimizations, non-singular, isotropic and anisotropic elasticity are applied to obtain the dislocation core energy for each of these supercells with different dipole distances. Graphs are generated for each species supported by the model.

(No matching species)

FCC Elastic Constants

This bar chart plot shows the mono-atomic face-centered cubic (fcc) elastic constants predicted by the current model (shown in blue) compared with the predictions for all other models in the OpenKIM Repository that support the species. The vertical bars show the average and standard deviation (one sigma) bounds for all model predictions. Graphs are generated for each species supported by the model.

Species: C
Species: Fe
Species: Nb


FCC Lattice Constant

This bar chart plot shows the mono-atomic face-centered cubic (fcc) lattice constant predicted by the current model (shown in red) compared with the predictions for all other models in the OpenKIM Repository that support the species. The vertical bars show the average and standard deviation (one sigma) bounds for all model predictions. Graphs are generated for each species supported by the model.

Species: Nb
Species: Fe
Species: C


FCC Stacking Fault Energies

This bar chart plot shows the intrinsic and extrinsic stacking fault energies as well as the unstable stacking and unstable twinning energies for face-centered cubic (fcc) predicted by the current model (shown in blue) compared with the predictions for all other models in the OpenKIM Repository that support the species. The vertical bars show the average and standard deviation (one sigma) bounds for all model predictions. Graphs are generated for each species supported by the model.

(No matching species)

FCC Surface Energies

This bar chart plot shows the mono-atomic face-centered cubic (fcc) relaxed surface energies predicted by the current model (shown in blue) compared with the predictions for all other models in the OpenKIM Repository that support the species. The vertical bars show the average and standard deviation (one sigma) bounds for all model predictions. Graphs are generated for each species supported by the model.

(No matching species)

SC Lattice Constant

This bar chart plot shows the mono-atomic simple cubic (sc) lattice constant predicted by the current model (shown in the unique color) compared with the predictions for all other models in the OpenKIM Repository that support the species. The vertical bars show the average and standard deviation (one sigma) bounds for all model predictions. Graphs are generated for each species supported by the model.

Species: Fe
Species: Nb
Species: C


Cubic Crystal Basic Properties Table

Species: C

Species: Fe

Species: Nb





Cohesive energy versus lattice constant curve for monoatomic cubic lattices v003

Creators:
Contributor: karls
Publication Year: 2019
DOI: https://doi.org/10.25950/64cb38c5

This Test Driver uses LAMMPS to compute the cohesive energy of a given monoatomic cubic lattice (fcc, bcc, sc, or diamond) at a variety of lattice spacings. The lattice spacings range from a_min (=a_min_frac*a_0) to a_max (=a_max_frac*a_0) where a_0, a_min_frac, and a_max_frac are read from stdin (a_0 is typically approximately equal to the equilibrium lattice constant). The precise scaling and number of lattice spacings sampled between a_min and a_0 (a_0 and a_max) is specified by two additional parameters passed from stdin: N_lower and samplespacing_lower (N_upper and samplespacing_upper). Please see README.txt for further details.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Cohesive energy versus lattice constant curve for bcc C v004 view 19730
Cohesive energy versus lattice constant curve for bcc Fe v004 view 17246
Cohesive energy versus lattice constant curve for bcc Nb v004 view 19436
Cohesive energy versus lattice constant curve for diamond C v004 view 19878
Cohesive energy versus lattice constant curve for diamond Fe v004 view 19951
Cohesive energy versus lattice constant curve for diamond Nb v004 view 19878
Cohesive energy versus lattice constant curve for fcc C v004 view 20098
Cohesive energy versus lattice constant curve for fcc Fe v004 view 16252
Cohesive energy versus lattice constant curve for fcc Nb v004 view 19804
Cohesive energy versus lattice constant curve for sc C v004 view 19509
Cohesive energy versus lattice constant curve for sc Fe v004 view 20466
Cohesive energy versus lattice constant curve for sc Nb v004 view 16918


Elastic constants for cubic crystals at zero temperature and pressure v006

Creators: Junhao Li and Ellad Tadmor
Contributor: tadmor
Publication Year: 2019
DOI: https://doi.org/10.25950/5853fb8f

Computes the cubic elastic constants for some common crystal types (fcc, bcc, sc, diamond) by calculating the hessian of the energy density with respect to strain. An estimate of the error associated with the numerical differentiation performed is reported.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Elastic constants for bcc C at zero temperature v006 view 39804
Elastic constants for bcc Fe at zero temperature v006 view 72884
Elastic constants for bcc Nb at zero temperature v006 view 60472
Elastic constants for diamond C at zero temperature v001 view 191590
Elastic constants for diamond Nb at zero temperature v001 view 178769
Elastic constants for fcc C at zero temperature v006 view 43573
Elastic constants for fcc Fe at zero temperature v006 view 63166
Elastic constants for fcc Nb at zero temperature v006 view 40808
Elastic constants for sc C at zero temperature v006 view 70528
Elastic constants for sc Fe at zero temperature v006 view 60369
Elastic constants for sc Nb at zero temperature v006 view 58087


Equilibrium structure and energy for a crystal structure at zero temperature and pressure v001

Creators:
Contributor: ilia
Publication Year: 2023
DOI: https://doi.org/10.25950/e8a7ed84

Computes the equilibrium crystal structure and energy for an arbitrary crystal at zero temperature and applied stress by performing symmetry-constrained relaxation. The crystal structure is specified using the AFLOW prototype designation. Multiple sets of free parameters corresponding to the crystal prototype may be specified as initial guesses for structure optimization. No guarantee is made regarding the stability of computed equilibria, nor that any are the ground state.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Equilibrium crystal structure and energy for CNb in AFLOW crystal prototype A5B6_mC22_12_agh_ij v001 view 157695
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype A6B23_cF116_225_e_acfh v001 view 6637919
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype A7B6_hR13_166_ah_3c v001 view 165352
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_cF16_227_c v001 view 288666
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_cF240_202_h2i v001 view 15365703
Equilibrium crystal structure and energy for Fe in AFLOW crystal prototype A_cF4_225_a v001 view 123977
Equilibrium crystal structure and energy for Nb in AFLOW crystal prototype A_cF4_225_a v001 view 89375
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_cF8_227_a v001 view 127437
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_cI16_206_c v001 view 97768
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_cI16_229_f v001 view 99682
Equilibrium crystal structure and energy for Fe in AFLOW crystal prototype A_cI2_229_a v001 view 65522
Equilibrium crystal structure and energy for Nb in AFLOW crystal prototype A_cI2_229_a v001 view 85694
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_cI8_214_a v001 view 83486
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_cP1_221_a v001 view 55878
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_cP20_221_gj v001 view 94087
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hP12_194_bc2f v001 view 76124
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hP12_194_e2f v001 view 70897
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hP16_194_e3f v001 view 75240
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hP2_191_c v001 view 60074
Equilibrium crystal structure and energy for Fe in AFLOW crystal prototype A_hP2_194_c v001 view 46160
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hP4_194_bc v001 view 59633
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hP4_194_f v001 view 76050
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hP8_194_ef v001 view 74946
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hR10_166_5c v001 view 62209
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hR14_166_7c v001 view 84443
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hR2_166_c v001 view 69792
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hR4_166_2c v001 view 52712
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_hR60_166_2h4i v001 view 1336359
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_oC16_65_pq v001 view 109106
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_oC8_65_gh v001 view 78848
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_oI120_71_lmn6o v001 view 897213
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_tI8_139_h v001 view 72222
Equilibrium crystal structure and energy for Fe in AFLOW crystal prototype A_tP28_136_f2ij v001 view 97032
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype AB2_cF24_227_a_d v001 view 362507
Equilibrium crystal structure and energy for CNb in AFLOW crystal prototype AB2_hP3_164_a_d v001 view 69203
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype AB2_hP3_191_a_c v001 view 61326
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype AB2_oP12_62_c_2c v001 view 88565
Equilibrium crystal structure and energy for CNb in AFLOW crystal prototype AB2_oP12_62_c_2c v001 view 59633
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype AB2_oP6_58_a_g v001 view 86872
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype AB3_cF16_225_a_bc v001 view 131413
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype AB3_cP4_221_a_c v001 view 80320
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype AB3_hP8_182_c_g v001 view 58823
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype AB3_oP16_62_c_cd v001 view 135609
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype AB4_cP5_215_a_e v001 view 59706
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype AB4_mP10_11_e_4e v001 view 83412
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype AB4_tI10_87_a_h v001 view 59044
Equilibrium crystal structure and energy for CNb in AFLOW crystal prototype AB_cF8_216_a_c v001 view 106676
Equilibrium crystal structure and energy for CNb in AFLOW crystal prototype AB_cF8_225_a_b v001 view 105056
Equilibrium crystal structure and energy for CNb in AFLOW crystal prototype AB_cP2_221_a_b v001 view 91437
Equilibrium crystal structure and energy for CNb in AFLOW crystal prototype AB_hP4_194_c_a v001 view 84222
Equilibrium crystal structure and energy for CNb in AFLOW crystal prototype AB_hP4_194_c_d v001 view 47264


Equilibrium structure and energy for a crystal structure at zero temperature and pressure v002

Creators:
Contributor: ilia
Publication Year: 2024
DOI: https://doi.org/10.25950/2f2c4ad3

Computes the equilibrium crystal structure and energy for an arbitrary crystal at zero temperature and applied stress by performing symmetry-constrained relaxation. The crystal structure is specified using the AFLOW prototype designation. Multiple sets of free parameters corresponding to the crystal prototype may be specified as initial guesses for structure optimization. No guarantee is made regarding the stability of computed equilibria, nor that any are the ground state.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype A2B5_mC28_15_f_e2f v002 view 230138
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype A2B_cF24_227_c_b v002 view 225055
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype A2B_hP12_194_ah_f v002 view 70968
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype A2B_hP24_194_fgh_ef v002 view 72122
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype A2B_oC24_63_acg_f v002 view 169695
Equilibrium crystal structure and energy for CNb in AFLOW crystal prototype A3B4_cP7_221_d_ac v002 view 87388
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype A3B7_hP20_186_c_b2c v002 view 91748
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype A3B_cF16_225_ac_b v002 view 108578
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype A3B_cP4_221_c_a v002 view 75039


Relaxed energy as a function of tilt angle for a symmetric tilt grain boundary within a cubic crystal v003

Creators:
Contributor: brunnels
Publication Year: 2022
DOI: https://doi.org/10.25950/2c59c9d6

Computes grain boundary energy for a range of tilt angles given a crystal structure, tilt axis, and material.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Relaxed energy as a function of tilt angle for a 100 symmetric tilt grain boundary in bcc Fe v001 view 9152051
Relaxed energy as a function of tilt angle for a 110 symmetric tilt grain boundary in bcc Fe v001 view 27988820
Relaxed energy as a function of tilt angle for a 111 symmetric tilt grain boundary in bcc Fe v001 view 15658565
Relaxed energy as a function of tilt angle for a 112 symmetric tilt grain boundary in bcc Fe v001 view 58125070
Relaxed energy as a function of tilt angle for a 100 symmetric tilt grain boundary in fcc Fe v001 view 19068501
Relaxed energy as a function of tilt angle for a 111 symmetric tilt grain boundary in fcc Fe v001 view 62476804


Cohesive energy and equilibrium lattice constant of hexagonal 2D crystalline layers v002

Creators: Ilia Nikiforov
Contributor: ilia
Publication Year: 2019
DOI: https://doi.org/10.25950/dd36239b

Given atomic species and structure type (graphene-like, 2H, or 1T) of a 2D hexagonal monolayer crystal, as well as an initial guess at the lattice spacing, this Test Driver calculates the equilibrium lattice spacing and cohesive energy using Polak-Ribiere conjugate gradient minimization in LAMMPS
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Cohesive energy and equilibrium lattice constant of graphene v002 view 1402


Equilibrium lattice constant and cohesive energy of a cubic lattice at zero temperature and pressure v007

Creators: Daniel S. Karls and Junhao Li
Contributor: karls
Publication Year: 2019
DOI: https://doi.org/10.25950/2765e3bf

Equilibrium lattice constant and cohesive energy of a cubic lattice at zero temperature and pressure.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Equilibrium zero-temperature lattice constant for bcc C v007 view 41137
Equilibrium zero-temperature lattice constant for bcc Fe v007 view 41077
Equilibrium zero-temperature lattice constant for bcc Nb v007 view 41445
Equilibrium zero-temperature lattice constant for diamond C v007 view 39326
Equilibrium zero-temperature lattice constant for diamond Fe v007 view 71014
Equilibrium zero-temperature lattice constant for diamond Nb v007 view 47264
Equilibrium zero-temperature lattice constant for fcc C v007 view 49959
Equilibrium zero-temperature lattice constant for fcc Fe v007 view 45350
Equilibrium zero-temperature lattice constant for fcc Nb v007 view 57647
Equilibrium zero-temperature lattice constant for sc C v007 view 44614
Equilibrium zero-temperature lattice constant for sc Fe v007 view 46160
Equilibrium zero-temperature lattice constant for sc Nb v007 view 53890


Equilibrium lattice constants for hexagonal bulk structures at zero temperature and pressure v005

Creators: Daniel S. Karls and Junhao Li
Contributor: karls
Publication Year: 2019
DOI: https://doi.org/10.25950/c339ca32

Calculates lattice constant of hexagonal bulk structures at zero temperature and pressure by using simplex minimization to minimize the potential energy.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Equilibrium lattice constants for hcp Fe v005 view 444895
Equilibrium lattice constants for hcp Nb v005 view 515564


Linear thermal expansion coefficient of cubic crystal structures v002

Creators:
Contributor: mjwen
Publication Year: 2024
DOI: https://doi.org/10.25950/9d9822ec

This Test Driver uses LAMMPS to compute the linear thermal expansion coefficient at a finite temperature under a given pressure for a cubic lattice (fcc, bcc, sc, diamond) of a single given species.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Linear thermal expansion coefficient of bcc Fe at 293.15 K under a pressure of 0 MPa v002 view 2214578
Linear thermal expansion coefficient of diamond C at 293.15 K under a pressure of 0 MPa v002 view 12622161


High-symmetry surface energies in cubic lattices and broken bond model v004

Creators: Matt Bierbaum
Contributor: mattbierbaum
Publication Year: 2019
DOI: https://doi.org/10.25950/6c43a4e6

Calculates the surface energy of several high symmetry surfaces and produces a broken-bond model fit. In latex form, the fit equations are given by:

E_{FCC} (\vec{n}) = p_1 (4 \left( |x+y| + |x-y| + |x+z| + |x-z| + |z+y| +|z-y|\right)) + p_2 (8 \left( |x| + |y| + |z|\right)) + p_3 (2 ( |x+ 2y + z| + |x+2y-z| + |x-2y + z| + |x-2y-z| + |2x+y+z| + |2x+y-z| +|2x-y+z| +|2x-y-z| +|x+y+2z| +|x+y-2z| +|x-y+2z| +|x-y-2z| ) + c

E_{BCC} (\vec{n}) = p_1 (6 \left( | x+y+z| + |x+y-z| + |-x+y-z| + |x-y+z| \right)) + p_2 (8 \left( |x| + |y| + |z|\right)) + p_3 (4 \left( |x+y| + |x-y| + |x+z| + |x-z| + |z+y| +|z-y|\right)) +c.

In Python, these two fits take the following form:

def BrokenBondFCC(params, index):

import numpy
x, y, z = index
x = x / numpy.sqrt(x**2.+y**2.+z**2.)
y = y / numpy.sqrt(x**2.+y**2.+z**2.)
z = z / numpy.sqrt(x**2.+y**2.+z**2.)

return params[0]*4* (abs(x+y) + abs(x-y) + abs(x+z) + abs(x-z) + abs(z+y) + abs(z-y)) + params[1]*8*(abs(x) + abs(y) + abs(z)) + params[2]*(abs(x+2*y+z) + abs(x+2*y-z) +abs(x-2*y+z) +abs(x-2*y-z) + abs(2*x+y+z) +abs(2*x+y-z) +abs(2*x-y+z) +abs(2*x-y-z) + abs(x+y+2*z) +abs(x+y-2*z) +abs(x-y+2*z) +abs(x-y-2*z))+params[3]

def BrokenBondBCC(params, x, y, z):


import numpy
x, y, z = index
x = x / numpy.sqrt(x**2.+y**2.+z**2.)
y = y / numpy.sqrt(x**2.+y**2.+z**2.)
z = z / numpy.sqrt(x**2.+y**2.+z**2.)

return params[0]*6*(abs(x+y+z) + abs(x-y-z) + abs(x-y+z) + abs(x+y-z)) + params[1]*8*(abs(x) + abs(y) + abs(z)) + params[2]*4* (abs(x+y) + abs(x-y) + abs(x+z) + abs(x-z) + abs(z+y) + abs(z-y)) + params[3]
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Broken-bond fit of high-symmetry surface energies in bcc Fe v004 view 75291
Broken-bond fit of high-symmetry surface energies in bcc Nb v004 view 91573


Monovacancy formation energy and relaxation volume for cubic and hcp monoatomic crystals v001

Creators:
Contributor: efuem
Publication Year: 2023
DOI: https://doi.org/10.25950/fca89cea

Computes the monovacancy formation energy and relaxation volume for cubic and hcp monoatomic crystals.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Monovacancy formation energy and relaxation volume for bcc Fe view 404177
Monovacancy formation energy and relaxation volume for bcc Nb view 865777


Vacancy formation and migration energies for cubic and hcp monoatomic crystals v001

Creators:
Contributor: efuem
Publication Year: 2023
DOI: https://doi.org/10.25950/c27ba3cd

Computes the monovacancy formation and migration energies for cubic and hcp monoatomic crystals.
Test Test Results Link to Test Results page Benchmark time
Usertime multiplied by the Whetstone Benchmark. This number can be used (approximately) to compare the performance of different models independently of the architecture on which the test was run.

Measured in Millions of Whetstone Instructions (MWI)
Vacancy formation and migration energy for bcc Fe view 711469
Vacancy formation and migration energy for bcc Nb view 5018930


ElasticConstantsCubic__TD_011862047401_006
Test Error Categories Link to Error page
Elastic constants for diamond Fe at zero temperature v001 other view

ElasticConstantsHexagonal__TD_612503193866_004

EquilibriumCrystalStructure__TD_457028483760_000

EquilibriumCrystalStructure__TD_457028483760_001
Test Error Categories Link to Error page
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype A3B_tI8_139_ad_b v001 other view
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_mC16_12_4i v001 other view
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_oC16_65_mn v001 other view
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_oC8_67_m v001 other view
Equilibrium crystal structure and energy for C in AFLOW crystal prototype A_oP16_62_4c v001 other view
Equilibrium crystal structure and energy for Fe in AFLOW crystal prototype A_tP1_123_a v001 other view
Equilibrium crystal structure and energy for CFe in AFLOW crystal prototype AB3_tI32_82_g_3g v001 other view
Equilibrium crystal structure and energy for FeNb in AFLOW crystal prototype AB3_tI8_139_a_bd v001 other view

EquilibriumCrystalStructure__TD_457028483760_002

GrainBoundaryCubicCrystalSymmetricTiltRelaxedEnergyVsAngle__TD_410381120771_003

LatticeConstantHexagonalEnergy__TD_942334626465_005
Test Error Categories Link to Error page
Equilibrium lattice constants for hcp C v005 other view

SurfaceEnergyCubicCrystalBrokenBondFit__TD_955413365818_004




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MEAM_LAMMPS__MD_249792265679_002.txz Tar+XZ Linux and OS X archive
MEAM_LAMMPS__MD_249792265679_002.zip Zip Windows archive
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