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MEAM_LAMMPS_KimKimJung_2017_NiAlTi__MO_478967255435_002

Interatomic potential for Aluminum (Al), Nickel (Ni), Titanium (Ti).
Use this Potential

Title
A single sentence description.
MEAM Potential for the Ni-Al-Ti system developed by Kim et al. (2017) v002
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 the Ni-Al-Ti system has been developed based on the second nearest-neighbor modified embedded-atom method (2NN-MEAM) formalism. Atomistic simulations using the Ni-Al-Ti ternary potential validate that the potential can be applied successfully to atomic-scale investigations to clarify the effects of titanium on important materials phenomena (site preference in γ′, γ-γ′ phase transition, and segregation on grain boundaries) in Ni-Al-Ti ternary superalloys.
Species
The supported atomic species.
Al, Ni, Ti
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 Hyeon-Seok Do
Maintainer Hyeon-Seok Do
Developer Young-Kwang Kim
Hong-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 Y-K, Kim H-K, Jung W-S, Lee B-J. Development and application of Ni-Ti and Ni-Al-Ti 2NN-MEAM interatomic potentials for Ni-base superalloys. Computational Materials Science. 2017;139:225–33. doi:10.1016/j.commatsci.2017.08.002

[2] Kim Y-K, Kim H-K, Jung W-S, Lee B-J. MEAM Potential for the Ni-Al-Ti system developed by Kim et al. (2017) v002. OpenKIM; 2023. doi:10.25950/6bc8efba

[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_478967255435_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_KimKimJung_2017_NiAlTi__MO_478967255435_002
DOI 10.25950/6bc8efba
https://doi.org/10.25950/6bc8efba
https://commons.datacite.org/doi.org/10.25950/6bc8efba
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_KimKimJung_2017_NiAlTi__MO_478967255435_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
B 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: Al
Species: Ni
Species: Ti


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: Al
Species: Ti
Species: Ni


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: Ti
Species: Ni
Species: Al


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: Ni
Species: Al
Species: Ti


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: Ni
Species: Ti
Species: Al


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.

Species: Ni
Species: Al


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.

Species: Ni
Species: Al


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: Ni
Species: Al
Species: Ti


Cubic Crystal Basic Properties Table

Species: Al

Species: Ni

Species: Ti





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 Al v004 view 9906
Cohesive energy versus lattice constant curve for bcc Ni v004 view 11117
Cohesive energy versus lattice constant curve for bcc Ti v004 view 9339
Cohesive energy versus lattice constant curve for diamond Al v004 view 11117
Cohesive energy versus lattice constant curve for diamond Ni v004 view 9309
Cohesive energy versus lattice constant curve for diamond Ti v004 view 10969
Cohesive energy versus lattice constant curve for fcc Al v004 view 10822
Cohesive energy versus lattice constant curve for fcc Ni v004 view 9926
Cohesive energy versus lattice constant curve for fcc Ti v004 view 11043
Cohesive energy versus lattice constant curve for sc Al v004 view 11117
Cohesive energy versus lattice constant curve for sc Ni v004 view 10374
Cohesive energy versus lattice constant curve for sc Ti v004 view 10433


Elastic constants for arbitrary crystals at zero temperature and pressure v000

Creators:
Contributor: ilia
Publication Year: 2024
DOI: https://doi.org/10.25950/888f9943

Computes the elastic constants for an arbitrary crystal. A robust computational protocol is used, attempting multiple methods and step sizes to achieve an acceptably low error in numerical differentiation and deviation from material symmetry. The crystal structure is specified using the AFLOW prototype designation as part of the Crystal Genome testing framework. In addition, the distance from the obtained elasticity tensor to the nearest isotropic tensor is computed.
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 AlNiTi in AFLOW crystal prototype A16B7C6_cF116_225_2f_ad_e at zero temperature and pressure v000 view 1142517
Elastic constants for AlNi in AFLOW crystal prototype A3B2_hP5_164_ad_d at zero temperature and pressure v000 view 706094


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 Al at zero temperature v006 view 50575
Elastic constants for bcc Ni at zero temperature v006 view 58749
Elastic constants for bcc Ti at zero temperature v006 view 25641
Elastic constants for diamond Al at zero temperature v001 view 65596
Elastic constants for diamond Ni at zero temperature v001 view 65256
Elastic constants for fcc Al at zero temperature v006 view 34896
Elastic constants for fcc Ni at zero temperature v006 view 38651
Elastic constants for fcc Ti at zero temperature v006 view 42479
Elastic constants for sc Al at zero temperature v006 view 55583
Elastic constants for sc Ni at zero temperature v006 view 39461
Elastic constants for sc Ti at zero temperature v006 view 25551


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 AlNiTi in AFLOW crystal prototype A16B7C6_cF116_225_2f_ad_e v001 view 804584
Equilibrium crystal structure and energy for AlTi in AFLOW crystal prototype A2B_oC12_65_acg_h v002 view 66958
Equilibrium crystal structure and energy for AlTi in AFLOW crystal prototype A2B_tI24_141_2e_e v002 view 108001
Equilibrium crystal structure and energy for AlNi in AFLOW crystal prototype A3B2_hP5_164_ad_d v002 view 58970
Equilibrium crystal structure and energy for AlNi in AFLOW crystal prototype A3B5_oC16_65_ah_bej v002 view 93351
Equilibrium crystal structure and energy for AlTi in AFLOW crystal prototype A3B_cP4_221_c_a v002 view 83484
Equilibrium crystal structure and energy for NiTi in AFLOW crystal prototype A3B_hP16_194_gh_ac v002 view 55413
Equilibrium crystal structure and energy for AlNi in AFLOW crystal prototype A3B_oP16_62_cd_c v002 view 120664
Equilibrium crystal structure and energy for AlTi in AFLOW crystal prototype A3B_tI8_139_ad_b v002 view 93056
Equilibrium crystal structure and energy for AlNi in AFLOW crystal prototype A4B3_cI112_230_af_g v002 view 1184698
Equilibrium crystal structure and energy for NiTi in AFLOW crystal prototype A4B3_hR14_148_abf_f v002 view 66897
Equilibrium crystal structure and energy for Al in AFLOW crystal prototype A_cF4_225_a v002 view 60882
Equilibrium crystal structure and energy for Ni in AFLOW crystal prototype A_cF4_225_a v002 view 58451
Equilibrium crystal structure and energy for Ti in AFLOW crystal prototype A_cF4_225_a v002 view 84884
Equilibrium crystal structure and energy for Al in AFLOW crystal prototype A_cI2_229_a v002 view 72487
Equilibrium crystal structure and energy for Ni in AFLOW crystal prototype A_cI2_229_a v002 view 60516
Equilibrium crystal structure and energy for Ti in AFLOW crystal prototype A_cI2_229_a v002 view 61732
Equilibrium crystal structure and energy for Ni in AFLOW crystal prototype A_hP2_194_c v002 view 58676
Equilibrium crystal structure and energy for Ti in AFLOW crystal prototype A_hP2_194_c v002 view 51160
Equilibrium crystal structure and energy for Ti in AFLOW crystal prototype A_hP3_191_ad v002 view 77007
Equilibrium crystal structure and energy for AlTi in AFLOW crystal prototype AB2_cF12_216_a_bc v002 view 135609
Equilibrium crystal structure and energy for NiTi in AFLOW crystal prototype AB2_cF96_227_e_cf v002 view 1187131
Equilibrium crystal structure and energy for AlNiTi in AFLOW crystal prototype AB2C_cF16_225_a_c_b v001 view 80325
Equilibrium crystal structure and energy for AlNi in AFLOW crystal prototype AB3_cF16_225_a_bc v002 view 121400
Equilibrium crystal structure and energy for AlTi in AFLOW crystal prototype AB3_cF16_225_a_bc v002 view 125523
Equilibrium crystal structure and energy for AlNi in AFLOW crystal prototype AB3_cP4_221_a_c v002 view 90111
Equilibrium crystal structure and energy for AlTi in AFLOW crystal prototype AB3_hP8_194_c_h v002 view 61399
Equilibrium crystal structure and energy for AlNi in AFLOW crystal prototype AB_cP2_221_a_b v002 view 77743
Equilibrium crystal structure and energy for NiTi in AFLOW crystal prototype AB_cP2_221_a_b v002 view 69509
Equilibrium crystal structure and energy for NiTi in AFLOW crystal prototype AB_mP4_11_e_e v002 view 47940
Equilibrium crystal structure and energy for NiTi in AFLOW crystal prototype AB_oC8_63_c_c v002 view 89817
Equilibrium crystal structure and energy for AlTi in AFLOW crystal prototype AB_tP2_123_a_d v002 view 94897
Equilibrium crystal structure and energy for AlNiTi in AFLOW crystal prototype ABC2_cF16_216_a_c_bd v001 view 121842


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 fcc Al v003 view 31106752
Relaxed energy as a function of tilt angle for a 100 symmetric tilt grain boundary in fcc Ni v001 view 46950501
Relaxed energy as a function of tilt angle for a 111 symmetric tilt grain boundary in fcc Al v001 view 49380130
Relaxed energy as a function of tilt angle for a 111 symmetric tilt grain boundary in fcc Ni v001 view 82832775


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 Al v007 view 26062
Equilibrium zero-temperature lattice constant for bcc Ni v007 view 21792
Equilibrium zero-temperature lattice constant for bcc Ti v007 view 23338
Equilibrium zero-temperature lattice constant for diamond Al v007 view 20966
Equilibrium zero-temperature lattice constant for diamond Ni v007 view 24589
Equilibrium zero-temperature lattice constant for diamond Ti v007 view 23043
Equilibrium zero-temperature lattice constant for fcc Al v007 view 26062
Equilibrium zero-temperature lattice constant for fcc Ni v007 view 22381
Equilibrium zero-temperature lattice constant for fcc Ti v007 view 26430
Equilibrium zero-temperature lattice constant for sc Al v007 view 21006
Equilibrium zero-temperature lattice constant for sc Ni v007 view 20727
Equilibrium zero-temperature lattice constant for sc Ti v007 view 20906


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 Al v005 view 293893
Equilibrium lattice constants for hcp Ni v005 view 299194
Equilibrium lattice constants for hcp Ti v005 view 255732


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 fcc Al at 293.15 K under a pressure of 0 MPa v002 view 5860045
Linear thermal expansion coefficient of fcc Ni at 293.15 K under a pressure of 0 MPa v002 view 8251165


Phonon dispersion relations for an fcc lattice v004

Creators: Matt Bierbaum
Contributor: mattbierbaum
Publication Year: 2019
DOI: https://doi.org/10.25950/64f4999b

Calculates the phonon dispersion relations for fcc lattices and records the results as curves.
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)
Phonon dispersion relations for fcc Al v004 view 108222
Phonon dispersion relations for fcc Ni v004 view 89378


Stacking and twinning fault energies of an fcc lattice at zero temperature and pressure v002

Creators:
Contributor: SubrahmanyamPattamatta
Publication Year: 2019
DOI: https://doi.org/10.25950/b4cfaf9a

Intrinsic and extrinsic stacking fault energies, unstable stacking fault energy, unstable twinning energy, stacking fault energy as a function of fractional displacement, and gamma surface for a monoatomic FCC 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)
Stacking and twinning fault energies for fcc Al v002 view 50293501
Stacking and twinning fault energies for fcc Ni v002 view 89736911


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 fcc Al v004 view 141353
Broken-bond fit of high-symmetry surface energies in fcc Ni v004 view 157276


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 fcc Al view 618044
Monovacancy formation energy and relaxation volume for fcc Ni view 949999
Monovacancy formation energy and relaxation volume for hcp Ti view 483098


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 fcc Al view 1061608
Vacancy formation and migration energy for fcc Ni view 1641664
Vacancy formation and migration energy for hcp Ti view 4095214


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

ElasticConstantsHexagonal__TD_612503193866_004

EquilibriumCrystalStructure__TD_457028483760_000

EquilibriumCrystalStructure__TD_457028483760_002

GrainBoundaryCubicCrystalSymmetricTiltRelaxedEnergyVsAngle__TD_410381120771_003

PhononDispersionCurve__TD_530195868545_004

SurfaceEnergyCubicCrystalBrokenBondFit__TD_955413365818_004




This Model requires a Model Driver. Archives for the Model Driver MEAM_LAMMPS__MD_249792265679_002 appear below.


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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