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Title: Machine learning–enabled identification of material phase transitions based on experimental data: Exploring collective dynamics in ferroelectric relaxors

Journal Article · · Science Advances
 [1]; ORCiD logo [2];  [3];  [4];  [5]; ORCiD logo [5]; ORCiD logo [5]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Xi’an Jiaotong Univ., Shaanxi (China)
  2. Xi’an Jiaotong Univ., Shaanxi (China)
  3. Univ. of New South Wales, Sydney, NSW (Australia)
  4. Simon Fraser Univ., Burnaby, BC (Canada)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Exploration of phase transitions and construction of associated phase diagrams are of fundamental importance for condensed matter physics and materials science alike, and remain the focus of extensive research for both theoretical and experimental studies. For the latter, comprehensive studies involving scattering, thermodynamics, and modeling are typically required. We present a new approach to data mining multiple realizations of collective dynamics, measured through piezoelectric relaxation studies, to identify the onset of a structural phase transition in nanometer-scale volumes, that is, the probed volume of an atomic force microscope tip. Machine learning is used to analyze the multidimensional data sets describing relaxation to voltage and thermal stimuli, producing the temperature-bias phase diagram for a relaxor crystal without the need to measure (or know) the order parameter. The suitability of the approach to determine the phase diagram is shown with simulations based on a two-dimensional Ising model. Finally, these results indicate that machine learning approaches can be used to determine phase transitions in ferroelectrics, providing a general, statistically significant, and robust approach toward determining the presence of critical regimes and phase boundaries.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Natural Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725; N00014-12-1-1045; N00014-16-1-6301; 203773; 51431007; 51321003
OSTI ID:
1435239
Journal Information:
Science Advances, Vol. 4, Issue 3; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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Cited By (8)

The Use of Deep Learning to Fast Evaluate Organic Photovoltaic Materials journal November 2018
Smart machine learning or discovering meaningful physical and chemical contributions through dimensional stacking journal August 2019
An artificial intelligence atomic force microscope enabled by machine learning journal January 2018
Evaluation of the spectrum of a quantum system using machine learning based on incomplete information about the wavefunctions journal January 2020
Machine learning for composite materials journal March 2019
Materials science in the artificial intelligence age: high-throughput library generation, machine learning, and a pathway from correlations to the underpinning physics journal July 2019
Artificial Intelligent Atomic Force Microscope Enabled by Machine Learning text January 2018
Evaluation of the spectrum of a quantum system using machine learning based on incomplete information about the wavefunctions text January 2019

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