Tuning La0.67Sr0.33MnO3 surface magnetism using LaMnO3 and SrTiO3 caps

被引：3
作者：
Phillips, L. C. [1 ]
Maccherozzi, F. [2 ]
Moya, X. [1 ,3 ]
Ghidini, M. [1 ,4 ]
Yan, W. [1 ]
Soussi, J. [1 ]
Dhesi, S. S. [2 ]
Mathur, N. D. [1 ]
机构：
[1] Univ Cambridge, Dept Mat Sci, Cambridge CB3 0FS, England
[2] Diamond Light Source, Didcot OX11 0DE, Oxon, England
[3] Univ Barcelona, Fac Fis, Dept Estruct & Constituents Mat, E-08028 Barcelona, Catalonia, Spain
[4] Univ Parma, DiFeST, I-43124 Parma, Italy
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 355卷
基金：
英国工程与自然科学研究理事会;
关键词：
LSMO; Surface; Interface; Magnetism; PEEM; XMCD; Domain; HALF-METALLIC FERROMAGNET; GIANT MAGNETORESISTANCE; LA0.7SR0.3MNO3;
D O I：
10.1016/j.jmmm.2013.10.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated how the surface magnetism of epitaxial La0.67Sr0.33MnO3 films on NdGaO3 substrates is modified by 2 nm-thick caps of the undoped manganite LaMnO3 and the band insulator SrTiO3. Low-temperature photoemission electron microscopy images with x-ray magnetic circular dichroism contrast reveal large ferromagnetic domains, and a reduction of surface Curie temperature by 40 K (LaMnO3 cap) and 70 K (SrTiO3 cap). We use these negative results to argue that capped films of suboptimally doped La1-xSrxMnO3 (x not equal 0.33) should improve the operating temperature of all-oxide and other spintronic devices. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：331 / 333
页数：3
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