Solution Processed Large-scale Multiferroic Complex Oxide Epitaxy with Magnetically Switched Polarization
Abstract
Complex oxides with tunable structures have many fascinating properties, though high-quality complex oxide epitaxy with precisely controlled composition is still out of reach. Here we have successfully developed solution-based single crystalline epitaxy for multiferroic (1-x)BiTi(1-y)/2FeyMg(1-y)/2O3-(x)CaTiO3 (BTFM-CTO) solid solution in large area, confirming its ferroelectricity at atomic-scale with a spontaneous polarization of 79~89uC/cm2. Careful compositional tuning leads to a bulk magnetization of ~0.07uB/Fe at room temperature, enabling magnetically induced polarization switching exhibiting a large magnetoelectric coefficient of 2.7-3.0X10-7s/m. This work demonstrates the great potential of solution processing in large-scale complex oxide epitaxy and establishes novel room-temperature magnetoelectric coupling in epitaxial BTFM-CTO film, making it possible to explore a much wider space of composition, phase, and structure that can be easily scaled up for industrial applications.
Cite
@article{arxiv.1904.03370,
title = {Solution Processed Large-scale Multiferroic Complex Oxide Epitaxy with Magnetically Switched Polarization},
author = {Cong Liu and Feng An and Paria S. M. Gharavi and Qinwen Lu and Chao Chen and Liming Wang and Xiaozhi Zhan and Zedong Xu and Yuan Zhang and Ke Qu and Junxiang Yao and Yun Ou and Xiangli Zhong and Dongwen Zhang and Nagarajan Valanoor and Lang Chen and Tao Zhu and Deyang Chen and Xiaofang Zhai and Peng Gao and Tingting Jia and Shuhong Xie and Gaokuo Zhong and Jiangyu Li},
journal= {arXiv preprint arXiv:1904.03370},
year = {2019}
}