Intrinsic exchange bias effect in strain-engineered single antiferromagnetic LaMnO3 films

作     者：Guowei Zhou Huihui Ji Yuhao Bai Zhiyong Quan Xiaohong Xu 周国伟;姬慧慧;白宇浩;全志勇;许小红

作者机构：School of Chemistry and Materials Science Key Laboratory of Magnetic Molecules and Magnetic Information Materials Ministry of Education Shanxi Normal University Linfen 041004 China Research Institute of Materials Science of Shanxi Normal University & Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic Materials and Techonology Linfen 041004 China School of Physics and Electronic Information Shanxi Normal University Linfen 041004 China 

基　　金：financially supported by the National Key R&D Program of China (2017YFB0405703) the National Natural Science Foundation of China (51871137, 61434002 and 51571136) the Special Funds of Sanjin Scholars Program 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2019年第62卷第7期

页      码：1046-1052页

摘      要：In this work, epitaxial growth of LaMnO3 thin films on different substrates using pulsed laser deposition under tensile and compressive strain was studied. The intrinsic exchange bias effect was observed in the single A-type antiferromagnetic LaMnO3 films no matter whether the tensile or compressive strain was supplied by the substrates. Due to the lattice mismatch between the film and different substrates, the intense strain can induce MnO6 octahedral rotation in the bottom region of the film neighboring the substrate, which leads to the distortion of MnO6 octahedron and the net magnetic behavior. However, the upper part maintains the original A-type antiferromagnetic order due to strain relaxation. The exchange bias effect in single films is attributed to the coupling between the bottom canted magnetic part and the upper antiferromagnetic region. The observation of exchange bias in single films on different substrates enables the emergence of a new class of biasing components in spintronics, which are based on strain-engineering.

主 题 词：magnetic insulating state exchange bias Mn06 octahedral rotation strain and interface effects magnetic properties 

学科分类：07[理学] 070205[070205] 08[工学] 080501[080501] 0805[工学-能源动力学] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1007/s40843-018-9387-0

馆 藏 号：203455299...