Simultaneous control of ferromagnetism and ferroelasticity by oxygen octahedral backbone stretching

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外文摘要：Coexistence of ferromagnetism and ferroelasticity in a single material is an intriguing phenomenon,but has been rarely found.Here we studied both the ferromagnetism and ferroelasticity in a group of LaCoO3 films with systematically tuned atomic structures.We found that all films exhibit ferroelastic domains with four-fold symmetry and the larger domain size(higher elasticity)is always accompanied by stronger ferromagnetism.We performed synchrotron x-ray diffraction studies to investigate the backbone structure of the CoO6 octahedra,and found that both the ferromagnetism and the elasticity are simultaneously enhanced when the in-plane Co-O-Co bond angles are straightened.Therefore the study demonstrates the inextricable correlation between the ferromagnetism and ferroelasticity mediated through the octahedral backbone structure,which may open up new possibilities to develop multifunctional materials.

外文关键词：

perovskite oxide filmferromagnetismferroelasticitytwin domain

作者：

梁根豪、曹慧、成龙、查君坤、保明睿、叶飞、周华、赵爱迪、翟晓芳

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作者单位：

Department of Physics,University of Science and Technology of China,Hefei 230026,China

School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China

Materials Science Division,Argonne National Laboratory,Lemont,IL 60439,USA

School of Physical Science and Technology,Shanghai Tech University,Shanghai 201210,China

X-ray Science Division,Advanced Photon Source,Argonne National Laboratory,Lemont,IL 60439,USA

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaScience and Technology Commission of Shanghai MunicipalityShanghaiTech Startup FundArgonne National Laboratory

项目编号：

520722441210430521JC1405000DE-AC02-06CH11357

出版年：

2024

DOI：

10.1088/1674-1056/ad553c

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(9)