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In material science and engineering, obtaining a spectrum from a measurement is often time-consuming and its accurate prediction using data mining can also be difficult. In this work, we propose a machine learning strategy based on a deep neural network model to accurately predict the dielectric temperature spectrum for a typical multi-component ferroelectric system, i.e., (Ba1−xyCaxSry)(Ti1−uvwZruSnvHfw)O3. The deep neural network model uses physical features as inputs and directly outputs the full spectrum, in addition to yielding the octahedral factor, Matyonov–Batsanov electronegativity, ratio of valence electron to nuclear charge, and core electron distance (Schubert) as four key descriptors. Owing to the physically meaningful features, our model exhibits better performance and generalization ability in the broader composition space of BaTiO3-based solid solutions. And the prediction accuracy is superior to traditional machine learning models that predict dielectric permittivity values at each temperature. Furthermore, the transition temperature and the degree of dispersion of the ferroelectric phase transition are easily extracted from the predicted spectra to provide richer physical information. The prediction is also experimentally validated by typical samples of (Ba0.85Ca0.15)(Ti0.98–xZrxHf0.02)O3. This work provides insights for accelerating spectra predictions and extracting ferroelectric phase transition information.


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Machine learning assisted prediction of dielectric temperature spectrum of ferroelectrics

Show Author's information Jingjin Hea,b,cChangxin Wanga,bJunjie LidChuanbao LiueDezhen XuefJiangli CaobYanjing Sua,bLijie Qiaoa,bTurab LookmangYang Baia,b( )
Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China
Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Sichuan Province Key Laboratory of Information Materials and Devices Application, College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu 610225, China
School of Materials Science and Technology, University of Science and Technology Beijing, Beijing 100083, China
State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
AiMaterials Research LLC, Santa Fe, NM 87501, USA

Abstract

In material science and engineering, obtaining a spectrum from a measurement is often time-consuming and its accurate prediction using data mining can also be difficult. In this work, we propose a machine learning strategy based on a deep neural network model to accurately predict the dielectric temperature spectrum for a typical multi-component ferroelectric system, i.e., (Ba1−xyCaxSry)(Ti1−uvwZruSnvHfw)O3. The deep neural network model uses physical features as inputs and directly outputs the full spectrum, in addition to yielding the octahedral factor, Matyonov–Batsanov electronegativity, ratio of valence electron to nuclear charge, and core electron distance (Schubert) as four key descriptors. Owing to the physically meaningful features, our model exhibits better performance and generalization ability in the broader composition space of BaTiO3-based solid solutions. And the prediction accuracy is superior to traditional machine learning models that predict dielectric permittivity values at each temperature. Furthermore, the transition temperature and the degree of dispersion of the ferroelectric phase transition are easily extracted from the predicted spectra to provide richer physical information. The prediction is also experimentally validated by typical samples of (Ba0.85Ca0.15)(Ti0.98–xZrxHf0.02)O3. This work provides insights for accelerating spectra predictions and extracting ferroelectric phase transition information.

Keywords: ferroelectrics, machine learning (ML), dielectric temperature spectrum, phase transition information

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Publication history

Received: 03 June 2023
Revised: 02 July 2023
Accepted: 18 July 2023
Published: 18 September 2023
Issue date: September 2023

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© The Author(s) 2023.

Acknowledgements

This work was supported by the National Key R&D Program of China (2022YFB3807401), National Natural Science Foundation of China (52173217), and 111 project (B170003).

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