MEAM_LAMMPS_AlmyrasSangiovanniSarakinos_2019_NAlTi__MO_958395190627_002
| Title
A single sentence description.
|
MEAM potential for the N-Al-Ti system developed by Almyras et al. 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.
|
Semi-Empirical Force-Field Model for the Ti1-xAlxN (0 ≤ x ≤ 1) System\n\nG. A. Almyras, D. G. Sangiovanni, K. Sarakinos\n\nWe present a modified embedded atom method (MEAM) semi-empirical force-field model for the Ti1-xAlxN (0 ≤ x ≤ 1) alloy system. The MEAM parameters, determined via an adaptive simulated-annealing (ASA) minimization scheme, optimize the model’s predictions with respect to 0 K equilibrium volumes, elastic constants, cohesive energies, enthalpies of mixing, and point-defect formation energies, for a set of 40 elemental, binary, and ternary Ti-Al-N structures and configurations. Subsequently, the reliability of the model is thoroughly verified against known finite-temperature thermodynamic and kinetic properties of key binary Ti-N and Al-N phases, as well as properties of Ti1-xAlxN (0 < x < 1) alloys. The successful outcome of the validation underscores the transferability of our model, opening the way for large-scale molecular dynamics simulations of, e.g., phase evolution, interfacial processes, and mechanical response in Ti-Al-N-based alloys, superlattices, and nanostructures. |
| Species
The supported atomic species.
| Al, N, Ti |
| Disclaimer
A statement of applicability provided by the contributor, informing users of the intended use of this KIM Item.
|
None |
| Content Origin | https://www.mdpi.com/journal/materials/special_issues/Computational_alloys |
| Content Other Locations | https://openkim.org/id/Sim_LAMMPS_MEAM_AlmyrasSangiovanniSarakinos_2019_NAlTi__SM_871795249052_000 |
| Contributor |
Yaser Afshar |
| Maintainer |
Yaser Afshar |
| Developer |
Georgios Almyras D.G. Sangiovanni Kostas Sarakinos |
| Published on KIM | 2023 |
| How to Cite |
This Model originally published in [1] is archived in OpenKIM [2-5]. [1] Almyras GA, Sangiovanni DG, Sarakinos K. Semi-Empirical Force-Field Model for the Ti1−xAlxN (0 ≤ x ≤ 1) System. Materials. 2019;12(2). doi:10.3390/ma12020215 — (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] Almyras G, Sangiovanni DG, Sarakinos K. MEAM potential for the N-Al-Ti system developed by Almyras et al. v002. OpenKIM; 2023. doi:10.25950/d492eba7 [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. |
| Citations
This panel presents information regarding the papers that have cited the interatomic potential (IP) whose page you are on. The OpenKIM machine learning based Deep Citation framework is used to determine whether the citing article actually used the IP in computations (denoted by "USED") or only provides it as a background citation (denoted by "NOT USED"). For more details on Deep Citation and how to work with this panel, click the documentation link at the top of the panel. The word cloud to the right is generated from the abstracts of IP principle source(s) (given below in "How to Cite") and the citing articles that were determined to have used the IP in order to provide users with a quick sense of the types of physical phenomena to which this IP is applied. The bar chart shows the number of articles that cited the IP per year. Each bar is divided into green (articles that USED the IP) and blue (articles that did NOT USE the IP). Users are encouraged to correct Deep Citation errors in determination by clicking the speech icon next to a citing article and providing updated information. This will be integrated into the next Deep Citation learning cycle, which occurs on a regular basis. OpenKIM acknowledges the support of the Allen Institute for AI through the Semantic Scholar project for providing citation information and full text of articles when available, which are used to train the Deep Citation ML algorithm. |
This panel provides information on past usage of this interatomic potential (IP) powered by the OpenKIM Deep Citation framework. The word cloud indicates typical applications of the potential. The bar chart shows citations per year of this IP (bars are divided into articles that used the IP (green) and those that did not (blue)). The complete list of articles that cited this IP is provided below along with the Deep Citation determination on usage. See the Deep Citation documentation for more information. 
20 Citations (7 used)
Help us to determine which of the papers that cite this potential actually used it to perform calculations. If you know, click the .
USED (high confidence) M. Wang, G. Zhang, H. Xu, and Y. Zhang, “Atomistic Simulations and Experimental Investigations of the Diffusion Behavior of Steel/ZCuPb20Sn5 Bimetals,” THE Coatings. 2020. link Times cited: 3 Abstract: A hybrid verification method consisting of experiments and m… read more USED (low confidence) J. Li, S. Yang, L. Dong, J. Zhang, Z. Zheng, and J. Liu, “Effect of crystal orientation on the nanoindentation deformation behavior of TiN coating based on molecular dynamics,” Surface and Coatings Technology. 2023. link Times cited: 0 USED (low confidence) M. J. Kempner, J. M. Sestito, Y. Wang, and E. Zarkadoula, “Molecular dynamics simulations of cascade events in AlN,” Results in Materials. 2023. link Times cited: 1 USED (low confidence) J. Salamania et al., “Elucidating dislocation core structures in titanium nitride through high-resolution imaging and atomistic simulations,” Materials & Design. 2022. link Times cited: 10 USED (low confidence) R. Li et al., “Effects of AlN substrate orientation on crystalline quality of wurtzite GaN films investigated via molecular dynamics,” Computational Materials Science. 2022. link Times cited: 4 USED (low confidence) L. E. Atouani, K. Sbiaai, and A. Hasnaoui, “Insights into NinTim clusters adsorption and diffusion on B2-NiTi phase from atomistic simulations,” Surface Science. 2020. link Times cited: 2 USED (low confidence) A. Nikonov, “Molecular dynamic study of the mechanical properties of TiAlTaN coating on a titanium substrate subjected to scratching.” 2020. link Times cited: 0 NOT USED (low confidence) T. Li et al., “Deep learning interatomic potential for thermal and defect behaviour of aluminum nitride with quantum accuracy,” Computational Materials Science. 2024. link Times cited: 0 NOT USED (low confidence) W. Zheng, J. Airao, and R. Aghababaei, “Phase transformation and incidental effects of metastable crystalline TiAlN on the material removal mechanism,” Mechanics of Materials. 2023. link Times cited: 0 NOT USED (low confidence) J. Salamania et al., “High-resolution STEM investigation of the role of dislocations during decomposition of Ti1-xAlxNy,” Scripta Materialia. 2023. link Times cited: 3 NOT USED (low confidence) B. Waters, D. S. Karls, I. Nikiforov, R. Elliott, E. Tadmor, and B. Runnels, “Automated determination of grain boundary energy and potential-dependence using the OpenKIM framework,” Computational Materials Science. 2022. link Times cited: 5 NOT USED (low confidence) L. Wei, F. Zhou, S. Wang, W. Hao, Y. Liu, and J. Zhu, “Description of crystal defect properties in BCC Cr with extended Finnis–Sinclair potential,” Multidiscipline Modeling in Materials and Structures. 2022. link Times cited: 0 Abstract: PurposeThe purpose of this study is to propose extended pote… read more NOT USED (low confidence) D. Sangiovanni et al., “Descriptor for slip-induced crack blunting in refractory ceramics,” Physical Review Materials. 2022. link Times cited: 3 Abstract: Understanding the competition between brittleness and plasti… read more NOT USED (low confidence) N. Koutná et al., “Atomistic mechanisms underlying plasticity and crack growth in ceramics: a case study of AlN/TiN superlattices,” Acta Materialia. 2022. link Times cited: 26 NOT USED (low confidence) Z. Chen et al., “Atomic insights on intermixing of nanoscale nitride multilayer triggered by nanoindentation,” Acta Materialia. 2021. link Times cited: 20 NOT USED (low confidence) S. Liu et al., “Stress-dependent prediction of metastable phase formation for magnetron-sputtered V1−xAlxN and Ti1−xAlxN thin films,” Acta Materialia. 2020. link Times cited: 20 NOT USED (low confidence) N. Ouyang, C. Wang, and Y. Chen, “Temperature- and pressure-dependent phonon transport properties of SnS across phase transition from machine-learning interatomic potential,” International Journal of Heat and Mass Transfer. 2022. link Times cited: 8 NOT USED (low confidence) Y. Migal,’ “DFT-Study of Strength of TiAlN Coating on Iron Surface,” Springer Proceedings in Materials. 2021. link Times cited: 1 NOT USED (high confidence) J.-H. Lee, I.-H. Oh, J.-H. Jang, J.-H. Kim, S. Hong, and H.-K. Park, “Influence of Phase Composition in TiAlSiN Hard Coatings on the Evolution of Structure and Mechanical Properties,” Metals and Materials International. 2020. link Times cited: 2 NOT USED (high confidence) D. Sangiovanni, F. Tasnádi, L. Johnson, M. Odén, and I. Abrikosov, “Strength, transformation toughening, and fracture dynamics of rocksalt-structure
Ti1−xAlxN(0≤x≤0.75)
alloys,” Physical Review Materials. 2019. link Times cited: 23 Abstract: Ab initio-calculated ideal strength and toughness describe t… read more |
| Funding | Not available |
| Short KIM ID
The unique KIM identifier code.
| MO_958395190627_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_AlmyrasSangiovanniSarakinos_2019_NAlTi__MO_958395190627_002 |
| DOI |
10.25950/d492eba7 https://doi.org/10.25950/d492eba7 https://commons.datacite.org/doi.org/10.25950/d492eba7 |
| 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 |
| Driver | MEAM_LAMMPS__MD_249792265679_002 |
| KIM API Version | 2.2 |
| Potential Type | meam |
| Previous Version | MEAM_LAMMPS_AlmyrasSangiovanniSarakinos_2019_NAlTi__MO_958395190627_001 |
| 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-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.
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.
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.
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.
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.
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.
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.
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.
Cubic Crystal Basic Properties Table
Species: AlSpecies: N
Species: Ti
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 | 11716 | |
| Cohesive energy versus lattice constant curve for bcc Ti v004 | view | 13546 | |
| Cohesive energy versus lattice constant curve for diamond Al v004 | view | 12442 | |
| Cohesive energy versus lattice constant curve for diamond Ti v004 | view | 11915 | |
| Cohesive energy versus lattice constant curve for fcc Al v004 | view | 14135 | |
| Cohesive energy versus lattice constant curve for fcc Ti v004 | view | 13328 | |
| Cohesive energy versus lattice constant curve for sc Al v004 | view | 13473 | |
| Cohesive energy versus lattice constant curve for sc Ti v004 | view | 12651 |
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 | 33497 | |
| Elastic constants for bcc Ti at zero temperature v006 | view | 58087 | |
| Elastic constants for diamond Al at zero temperature v001 | view | 76197 | |
| Elastic constants for fcc Al at zero temperature v006 | view | 60442 | |
| Elastic constants for fcc Ti at zero temperature v006 | view | 30753 | |
| Elastic constants for sc Al at zero temperature v006 | view | 36957 | |
| Elastic constants for sc Ti at zero temperature v006 | view | 39755 |
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.
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 | 25988222 | |
| Relaxed energy as a function of tilt angle for a 111 symmetric tilt grain boundary in fcc Al v001 | view | 47071643 |
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 | 25502 | |
| Equilibrium zero-temperature lattice constant for bcc Ti v007 | view | 24079 | |
| Equilibrium zero-temperature lattice constant for diamond Al v007 | view | 27460 | |
| Equilibrium zero-temperature lattice constant for diamond Ti v007 | view | 24516 | |
| Equilibrium zero-temperature lattice constant for fcc Al v007 | view | 24308 | |
| Equilibrium zero-temperature lattice constant for fcc Ti v007 | view | 24099 | |
| Equilibrium zero-temperature lattice constant for sc Al v007 | view | 28491 | |
| Equilibrium zero-temperature lattice constant for sc Ti v007 | view | 22617 |
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 | 379514 | |
| Equilibrium lattice constants for hcp N v005 | view | 374581 | |
| Equilibrium lattice constants for hcp Ti v005 | view | 379072 |
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 | 3543281 |
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 | 123241 |
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 | 66295702 |
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 | 188536 |
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 | 762119 | |
| Monovacancy formation energy and relaxation volume for hcp Ti | view | 627688 |
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 | 5854449 | |
| Vacancy formation and migration energy for hcp Ti | view | 5099029 |
| Test | Error Categories | Link to Error page |
|---|---|---|
| Elastic constants for diamond Ti at zero temperature v001 | other | view |
ElasticConstantsHexagonal__TD_612503193866_004
| Test | Error Categories | Link to Error page |
|---|---|---|
| Elastic constants for hcp Al at zero temperature v004 | other | view |
| Elastic constants for hcp N at zero temperature v004 | other | view |
| Elastic constants for hcp Ti at zero temperature v004 | other | view |
EquilibriumCrystalStructure__TD_457028483760_000
| Test | Error Categories | Link to Error page |
|---|---|---|
| Equilibrium crystal structure and energy for AlTi in AFLOW crystal prototype A2B_tI24_141_2e_e v000 | other | view |
| Equilibrium crystal structure and energy for Ti in AFLOW crystal prototype A_cI2_229_a v000 | other | view |
EquilibriumCrystalStructure__TD_457028483760_002
| Test | Error Categories | Link to Error page |
|---|---|---|
| Equilibrium crystal structure and energy for N in AFLOW crystal prototype A_cI8_199_a v002 | other | view |
GrainBoundaryCubicCrystalSymmetricTiltRelaxedEnergyVsAngle__TD_410381120771_003
| Test | Error Categories | Link to Error page |
|---|---|---|
| Relaxed energy as a function of tilt angle for a 110 symmetric tilt grain boundary in fcc Al v001 | other | view |
| Relaxed energy as a function of tilt angle for a 112 symmetric tilt grain boundary in fcc Al v001 | other | view |
LatticeConstantCubicEnergy__TD_475411767977_007
| Test | Error Categories | Link to Error page |
|---|---|---|
| Equilibrium zero-temperature lattice constant for bcc N v007 | other | view |
| Equilibrium zero-temperature lattice constant for diamond N v007 | other | view |
| Equilibrium zero-temperature lattice constant for fcc N v007 | other | view |
| Equilibrium zero-temperature lattice constant for sc N v007 | other | view |
PhononDispersionCurve__TD_530195868545_004
| Test | Error Categories | Link to Error page |
|---|---|---|
| Phonon dispersion relations for fcc Al v004 | other | view |
SurfaceEnergyCubicCrystalBrokenBondFit__TD_955413365818_004
| Test | Error Categories | Link to Error page |
|---|---|---|
| Broken-bond fit of high-symmetry surface energies in fcc Al v004 | other | view |
| MEAM_LAMMPS_AlmyrasSangiovanniSarakinos_2019_NAlTi__MO_958395190627_002.txz | Tar+XZ | Linux and OS X archive |
| MEAM_LAMMPS_AlmyrasSangiovanniSarakinos_2019_NAlTi__MO_958395190627_002.zip | Zip | Windows archive |
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 |