Structural and magnetic properties of La0.7Sr0.3MnO3/LaCoO3 heterostructures

被引：11
作者：
Thota, S. [1 ]
Roychowdhury, K. [2 ,3 ]
Thakare, V. [4 ]
Ganguli, S. C. [5 ]
Chen, Z. H. [6 ]
Guo, E. J. [7 ]
Das, S. [4 ]
机构：
[1] Indian Inst Technol, Dept Phys, Gauhati 781039, India
[2] Cornell Univ, Dept Phys, LASSP, Ithaca, NY 14853 USA
[3] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA
[4] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
[5] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
[6] Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China
[7] Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA
来源：
APPLIED PHYSICS LETTERS | 2018年 / 113卷 / 12期
基金：
美国国家科学基金会;
关键词：
EXCHANGE BIAS; THIN-FILMS; SUPERLATTICES; INTERFACES; STABILITY; BILAYERS; MISMATCH;
D O I：
10.1063/1.5045359
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Perovskite manganites are well known for their complex magnetic and electronic properties. Their heterostructures are even more perplexing, specifically when interfaced with magnetic or nonmagnetic insulators as they offer particular promise for applications such as spin filter tunnel junctions. This study explores the structural and magnetic properties of one such heterostructure, namely, La0.7Sr0.3MnO3/LaCoO3 (LSMO/LCO) bilayers as the thickness of the LCO layer is varied while keeping that of the LSMO layer fixed. Exceeding a threshold value while gradually increasing the LCO layer thickness, prominent side lobes are observed in the reciprocal space map signifying the formation of periodic structural striped domains in LCO. The magnetic properties of the bilayers, specifically the interfacial couplings, are markedly influenced by the variation of the LCO thickness with noteworthy consequences that include a tunable negative exchange bias. Published by AIP Publishing.
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页数：5
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