Publication: Machine-Learning Clustering Technique Applied to Powder X-Ray Diffraction Patterns to Distinguish Compositions of ThMn<inf>12</inf>-Type Alloys
Issued Date
2020-07-01
Resource Type
ISSN
25130390
Other identifier(s)
2-s2.0-85085910886
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Advanced Theory and Simulations. Vol.3, No.7 (2020)
Suggested Citation
Keishu Utimula, Rutchapon Hunkao, Masao Yano, Hiroyuki Kimoto, Kenta Hongo, Shogo Kawaguchi, Sujin Suwanna, Ryo Maezono Machine-Learning Clustering Technique Applied to Powder X-Ray Diffraction Patterns to Distinguish Compositions of ThMn<inf>12</inf>-Type Alloys. Advanced Theory and Simulations. Vol.3, No.7 (2020). doi:10.1002/adts.202000039 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/57995
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Machine-Learning Clustering Technique Applied to Powder X-Ray Diffraction Patterns to Distinguish Compositions of ThMn<inf>12</inf>-Type Alloys
Abstract
© 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A clustering technique is applied using dynamic-time-wrapping (DTW) analysis to X-ray diffraction (XRD) spectrum patterns in order to identify the microscopic structures of substituents introduced into the main phase of magnetic alloys. The clustering technique is found to perform well, identifying the concentrations of the substituents with success rates of ≈90%. This level of performance is attributed to the capability of DTW processing to filter out irrelevant information such as the peak intensities (due to the uncontrollability of diffraction conditions in polycrystalline samples) and the uniform shift of peak positions (due to the thermal expansion of lattices). The established framework is not limited to the system treated in this work, but is widely applicable to systems the properties of which are to be tuned by atomic substitutions within a phase. The framework has a broader potential to predict properties such as magnetic moments, optical spectra etc.) from observed XRD patterns, by predicting such properties evaluated from predicted microscopic local structure.