Magnetic Interactions with Strain Gradient in Ultrathin Pr0.67Sr0.33MnO3 Films

扫码查看

原文链接

万方数据

外文摘要：Strain gradient is a normal phenomenon around a heterostructural interface in ultrathin film,and it is important to determine its effect on magnetic interactions to understand interfacial coupling.In this work,ultrathin Pr0.67Sro.33MnO3(PSMO)films on different substrates are studied.For PSMO film under different in-plane strain conditions,the saturated magnetization and Curie temperature can be qualita-tively explained by double-exchange interaction and the Jahn-Teller distortion.However,the difference in the saturated magnetization with zero field cooling and 5 T field cooling is proportional to the strain gradient.Strain-gradient-induced structural disorder is proposed to enhance phonon-electron antiferro-magnetic interactions and the corresponding antiferromagnetic-to-ferromagnetic phase transition via a strong magnetic field during the field cooling process.A non-monotonous structural transition of the MnO6 octahedral rotation can enlarge the strain gradient in PSMO film on a SrTiO3 substrate.This work demonstrates the existence of the flexomagnetic effect in ultrathin manganite film,which should be applicable to other complex oxide systems.

外文关键词：

Strain gradientManganite filmOctahedral rotationFlexomagneticMagnetic interactionsPhase transition

作者：

Bangmin Zhang、Ping Yang、Jun Ding、Jingsheng Chen、Gan Moog Chow

展开 >

作者单位：

Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices,School of Physics,Sun Yat-sen University,Guangzhou 510275,China

Singapore Synchrotron Light Source,National University of Singapore,Singapore 117603,Singapore

Department of Materials Science and Engineering,National University of Singapore,Singapore 117575,Singapore

基金：

Natural Science Foundation of Guangdong Province of ChinaLarge Scientific Facility Open Subject of Songshan Lake,Dongguan,Guangdong Province of ChinaSingapore Ministry of Education Academic Research Fund Tier 2Singapore Ministry of Education Academic Research Fund Tier 2Singapore Ministry of Education Academic Research Fund Tier 2Singapore National Research FoundationSSLS via National University of Singapore Core Support

项目编号：

2023A1515010882KFKT2022B06MOE2015-T2-1-016MOE2018-T2-1-019MoE T1 R-284-000-196-114NRF-CRP10-2012-02C-380-003-003-001

出版年：

2024

DOI：

10.1016/j.eng.2024.04.014

工程(英文)

CSTPCDEI

ISSN：2095-8099

年,卷(期)：2024.40(9)