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Utimula K, Yano M, Kimoto H, Hongo K, Nakano K, Maezono R. Feature Space of XRD Patterns Constructed by an Autoencoder. ADVANCED THEORY AND SIMULATIONS 2022. [DOI: 10.1002/adts.202200613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Keishu Utimula
- School of Materials Science JAIST Asahidai 1‐1 Nomi Ishikawa 923‐1292 Japan
| | - Masao Yano
- Toyota Motor Corporation 1, Toyota‐cho Toyota Aichi 471‐8572 Japan
| | - Hiroyuki Kimoto
- Toyota Motor Corporation 1, Toyota‐cho Toyota Aichi 471‐8572 Japan
| | - Kenta Hongo
- Research Center for Advanced Computing Infrastructure JAIST Asahidai 1‐1 Nomi Ishikawa 923‐1292 Japan
| | - Kousuke Nakano
- School of Information Science JAIST Asahidai 1‐1 Nomi Ishikawa 923‐1292 Japan
| | - Ryo Maezono
- School of Information Science JAIST Asahidai 1‐1 Nomi Ishikawa 923‐1292 Japan
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Nagy P, Kaszás B, Csabai I, Hegedűs Z, Michler J, Pethö L, Gubicza J. Machine Learning-Based Characterization of the Nanostructure in a Combinatorial Co-Cr-Fe-Ni Compositionally Complex Alloy Film. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12244407. [PMID: 36558261 PMCID: PMC9786732 DOI: 10.3390/nano12244407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/01/2022] [Accepted: 12/08/2022] [Indexed: 06/12/2023]
Abstract
A novel artificial intelligence-assisted evaluation of the X-ray diffraction (XRD) peak profiles was elaborated for the characterization of the nanocrystallite microstructure in a combinatorial Co-Cr-Fe-Ni compositionally complex alloy (CCA) film. The layer was produced by a multiple beam sputtering physical vapor deposition (PVD) technique on a Si single crystal substrate with the diameter of about 10 cm. This new processing technique is able to produce combinatorial CCA films where the elemental concentrations vary in a wide range on the disk surface. The most important benefit of the combinatorial sample is that it can be used for the study of the correlation between the chemical composition and the microstructure on a single specimen. The microstructure can be characterized quickly in many points on the disk surface using synchrotron XRD. However, the evaluation of the diffraction patterns for the crystallite size and the density of lattice defects (e.g., dislocations and twin faults) using X-ray line profile analysis (XLPA) is not possible in a reasonable amount of time due to the large number (hundreds) of XRD patterns. In the present study, a machine learning-based X-ray line profile analysis (ML-XLPA) was developed and tested on the combinatorial Co-Cr-Fe-Ni film. The new method is able to produce maps of the characteristic parameters of the nanostructure (crystallite size, defect densities) on the disk surface very quickly. Since the novel technique was developed and tested only for face-centered cubic (FCC) structures, additional work is required for the extension of its applicability to other materials. Nevertheless, to the knowledge of the authors, this is the first ML-XLPA evaluation method in the literature, which can pave the way for further development of this methodology.
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Affiliation(s)
- Péter Nagy
- Department of Materials Physics, Eötvös Loránd University, 1117 Budapest, Hungary
- Laboratory for Mechanics of Materials and Nanostructures, Empa, Swiss Federal Laboratories for Materials Science and Technology, 3602 Thun, Switzerland
| | - Bálint Kaszás
- Institute for Mechanical Systems, ETH Zürich, 8092 Zurich, Switzerland
| | - István Csabai
- Department of Physics of Complex Systems, Eötvös Loránd University, 1117 Budapest, Hungary
| | - Zoltán Hegedűs
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Johann Michler
- Laboratory for Mechanics of Materials and Nanostructures, Empa, Swiss Federal Laboratories for Materials Science and Technology, 3602 Thun, Switzerland
| | - László Pethö
- Laboratory for Mechanics of Materials and Nanostructures, Empa, Swiss Federal Laboratories for Materials Science and Technology, 3602 Thun, Switzerland
| | - Jenő Gubicza
- Department of Materials Physics, Eötvös Loránd University, 1117 Budapest, Hungary
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Prayogo GI, Tirelli A, Utimula K, Hongo K, Maezono R, Nakano K. Shry: Application of Canonical Augmentation to the Atomic Substitution Problem. J Chem Inf Model 2022; 62:2909-2915. [PMID: 35678099 PMCID: PMC9241080 DOI: 10.1021/acs.jcim.2c00389] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A common approach
for studying a solid solution or disordered system
within a periodic ab initio framework is to create
a supercell in which certain amounts of target elements are substituted
with other elements. The key to generating supercells is determining
how to eliminate symmetry-equivalent structures from many substitution
patterns. Although the total number of substitutions is on the order
of trillions, only symmetry-inequivalent atomic substitution patterns
need to be identified, and their number is far smaller than the total.
Our developed Python software package, which is called Shry (Suite for High-throughput generation of models with atomic substitutions
implemented by Python), allows the selection of only symmetry-inequivalent
structures from the vast number of candidates based on the canonical
augmentation algorithm. Shry is implemented in Python 3 and
uses the CIF format as the standard for both reading and writing the
reference and generated sets of substituted structures. Shry can be integrated into another Python program as a module or can
be used as a stand-alone program. The implementation was verified
through a comparison with other codes with the same functionality,
based on the total numbers of symmetry-inequivalent structures, and
also on the equivalencies of the output structures themselves. The
provided crystal structure data used for the verification are expected
to be useful for benchmarking other codes and also developing new
algorithms in the future.
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Affiliation(s)
- Genki Imam Prayogo
- School of Materials Science, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan
| | - Andrea Tirelli
- International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy
| | - Keishu Utimula
- School of Materials Science, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan
| | - Kenta Hongo
- Research Center for Advanced Computing Infrastructure, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan
| | - Ryo Maezono
- School of Information Science, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan
| | - Kousuke Nakano
- International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy.,School of Information Science, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan
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Chitturi SR, Ratner D, Walroth RC, Thampy V, Reed EJ, Dunne M, Tassone CJ, Stone KH. Automated prediction of lattice parameters from X-ray powder diffraction patterns. J Appl Crystallogr 2021; 54:1799-1810. [PMID: 34963768 PMCID: PMC8662964 DOI: 10.1107/s1600576721010840] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/19/2021] [Indexed: 11/22/2022] Open
Abstract
A key step in the analysis of powder X-ray diffraction (PXRD) data is the accurate determination of unit-cell lattice parameters. This step often requires significant human intervention and is a bottleneck that hinders efforts towards automated analysis. This work develops a series of one-dimensional convolutional neural networks (1D-CNNs) trained to provide lattice parameter estimates for each crystal system. A mean absolute percentage error of approximately 10% is achieved for each crystal system, which corresponds to a 100- to 1000-fold reduction in lattice parameter search space volume. The models learn from nearly one million crystal structures contained within the Inorganic Crystal Structure Database and the Cambridge Structural Database and, due to the nature of these two complimentary databases, the models generalize well across chemistries. A key component of this work is a systematic analysis of the effect of different realistic experimental non-idealities on model performance. It is found that the addition of impurity phases, baseline noise and peak broadening present the greatest challenges to learning, while zero-offset error and random intensity modulations have little effect. However, appropriate data modification schemes can be used to bolster model performance and yield reasonable predictions, even for data which simulate realistic experimental non-idealities. In order to obtain accurate results, a new approach is introduced which uses the initial machine learning estimates with existing iterative whole-pattern refinement schemes to tackle automated unit-cell solution.
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Affiliation(s)
- Sathya R. Chitturi
- Materials Science and Engineering, Stanford University, Stanford, CA94305, USA
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Daniel Ratner
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | | | - Vivek Thampy
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Evan J. Reed
- Materials Science and Engineering, Stanford University, Stanford, CA94305, USA
| | - Mike Dunne
- Materials Science and Engineering, Stanford University, Stanford, CA94305, USA
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | | | - Kevin H. Stone
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
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Velasco L, Castillo JS, Kante MV, Olaya JJ, Friederich P, Hahn H. Phase-Property Diagrams for Multicomponent Oxide Systems toward Materials Libraries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2102301. [PMID: 34514669 DOI: 10.1002/adma.202102301] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/29/2021] [Indexed: 05/27/2023]
Abstract
Exploring the vast compositional space offered by multicomponent systems or high entropy materials using the traditional route of materials discovery, one experiment at a time, is prohibitive in terms of cost and required time. Consequently, the development of high-throughput experimental methods, aided by machine learning and theoretical predictions will facilitate the search for multicomponent materials in their compositional variety. In this study, high entropy oxides are fabricated and characterized using automated high-throughput techniques. For intuitive visualization, a graphical phase-property diagram correlating the crystal structure, the chemical composition, and the band gap are introduced. Interpretable machine learning models are trained for automated data analysis and to speed up data comprehension. The establishment of materials libraries of multicomponent systems correlated with their properties (as in the present work), together with machine learning-based data analysis and theoretical approaches are opening pathways toward virtual development of novel materials for both functional and structural applications.
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Affiliation(s)
- Leonardo Velasco
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Juan S Castillo
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Facultad de Ingeniería, Universidad Nacional de Colombia, Av. Cra. 30 # 45-03, Ed. 407, Ciudad Universitaria, Bogotá, DC, 111321, Colombia
- Joint Research Laboratory Nanomaterials, Technische Universität Darmstadt, Otto-Berndt-Str. 3, 64206, Darmstadt, Germany
| | - Mohana V Kante
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Joint Research Laboratory Nanomaterials, Technische Universität Darmstadt, Otto-Berndt-Str. 3, 64206, Darmstadt, Germany
| | - Jhon J Olaya
- Facultad de Ingeniería, Universidad Nacional de Colombia, Av. Cra. 30 # 45-03, Ed. 407, Ciudad Universitaria, Bogotá, DC, 111321, Colombia
| | - Pascal Friederich
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Institute of Theoretical Informatics, Karlsruhe Institute of Technology, Am Fasanengarten 5, 76131, Karlsruhe, Germany
| | - Horst Hahn
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Joint Research Laboratory Nanomaterials, Technische Universität Darmstadt, Otto-Berndt-Str. 3, 64206, Darmstadt, Germany
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Utimula K, Prayogo GI, Nakano K, Hongo K, Maezono R. Stochastic Estimations of the Total Number of Classes for a Clustering having Extremely Large Samples to be Included in the Clustering Engine. ADVANCED THEORY AND SIMULATIONS 2021. [DOI: 10.1002/adts.202000301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Keishu Utimula
- School of Materials Science JAIST Asahidai 1‐1, Nomi Ishikawa 923‐1292 Japan
| | - Genki I. Prayogo
- School of Materials Science JAIST Asahidai 1‐1, Nomi Ishikawa 923‐1292 Japan
| | - Kousuke Nakano
- School of Information Science JAIST Asahidai 1‐1, Nomi Ishikawa 923‐1292 Japan
| | - Kenta Hongo
- Research Center for Advanced Computing Infrastructure JAIST Asahidai 1‐1, Nomi Ishikawa 923‐1292 Japan
- Center for Materials Research by Information Integration Research and Services Division of Materials Data and Integrated System National Institute for Materials Science Tsukuba 305‐0047 Japan
- PRESTO Japan Science and Technology Agency 4‐1‐8 Honcho, Kawaguchi‐shi Saitama 322‐0012 Japan
| | - Ryo Maezono
- School of Information Science JAIST Asahidai 1‐1, Nomi Ishikawa 923‐1292 Japan
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