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Bibliographic Details
Main Authors:	Wang, Tao, Zou, Mingjie, Zhang, Dehe, Ku, Yu-Chieh, Zheng, Yawen, Pan, Shen, Ren, Zhongqi, Xu, Zedong, Huang, Haoliang, Luo, Wei, Tang, Yunlong, Chen, Lang, Liu, Cheng-En, Chang, Chun-Fu, Das, Sujit, Bellaiche, Laurent, Yang, Yurong, Ma, Xiuliang, Kuo, Chang-Yang, Liu, Xingjun, Chen, Zuhuang
Format:	Preprint
Published:	2024
Subjects:	Materials Science
Online Access:	https://arxiv.org/abs/2410.12252
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Table of Contents:

Efforts to combine the advantages of multiple systems to enhance functionlities through solid solution design present a great challenge due to the constraint imposed by the classical Vegard law. Here, we successfully navigate this trade off by leveraging the synergistic effect of chemical doping and strain engineering in solid solution system of BiFeO3 BaTiO3. Unlike bulks, a significant deviation from the Vegard law accompanying with enhanced multiferroism is observed in the strained solid solution epitaxial films, where we achieve a pronounced tetragonality, enhanced saturated magnetization, substantial polarization, high ferroelectric Curie temperature, all while maintaining impressively low leakage current. These characteristics surpass the properties of their parent BiFeO3 and BaTiO3 films. Moreover, the superior ferroelectricity has never been reported in corresponding bulks. These findings underscore the potential of strained BiFeO3 BaTiO3 films as lead-free, room-temperature multiferroics.

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