Sign reversal of anisotropic magnetoresistance in La0.7Ca0.3MnO3/SrTiO3 ultrathin films

被引：21
|
作者：
Sharma, Himanshu [1 ]
Tulapurkar, A. [2 ]
Tomy, C. V. [1 ]
机构：
[1] Indian Inst Technol, Dept Phys, Bombay 400076, Maharashtra, India
[2] Indian Inst Technol, Dept Elect Engn, Bombay 400076, Maharashtra, India
来源：
APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 22期
关键词：
D O I：
10.1063/1.4903236
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present the observation of strain induced sign reversal of anisotropic magnetoresistance (AMR) in La0.7Ca0.3MnO3 (LCMO) ultrathin films (thickness similar to 4 nm) deposited on SrTiO3 (001) substrate (STO). We have also observed unusually large AMR (similar to 24%) in LCMO/STO thin films with thickness of 6 nm below but close to its Curie temperature (TC) which decreases as the film thickness increases. The sign reversal of AMR (with a maximum value of -6%) with magnetic field or temperature for the 4 nm thin film may be attributed to the increase in tensile strain in the plane of the thin film which in turn facilitates the rotation of the magnetization easy axis. (C) 2014 AIP Publishing LLC.
引用
收藏
页数：4
相关论文
共 50 条
  • [1] Measurement of the anisotropic magnetoresistance in films of La0.7Ca0.3MnO3
    Cabeza, O
    Bari, MA
    Barca, O
    Miguélez, F
    Muirhead, CM
    BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO, 1998, 37 (2-3): : 213 - 216
  • [2] Anisotropic magnetoresistance of thin La0.7Ca0.3MnO3 films
    Ziese, M
    Sena, SP
    JOURNAL OF PHYSICS-CONDENSED MATTER, 1998, 10 (12) : 2727 - 2737
  • [3] Sign reversal of angular dependence of Planar Hall Effect in La0.7Ca0.3MnO3/SrTiO3 ultrathin film
    Sharma, Himanshu
    Bana, Hanuman
    Tulapurkar, Ashwin
    Tomy, C. V.
    MATERIALS CHEMISTRY AND PHYSICS, 2016, 180 : 5 - 8
  • [4] Anisotropic strain and magnetoresistance of La0.7Ca0.3MnO3
    Koo, TY
    Park, SH
    Lee, KB
    Jeong, YH
    APPLIED PHYSICS LETTERS, 1997, 71 (07) : 977 - 979
  • [5] Mesoscopic magnetotransport in thin La0.7Ca0.3MnO3/SrTiO3 films
    Rozenberg, E
    Markovich, V
    Yuzhelevskii, Y
    Gorodetsky, G
    Ziese, M
    JOURNAL OF APPLIED PHYSICS, 2004, 95 (11) : 7103 - 7105
  • [6] Magnetoresistance and magnetic viscosity of La0.7Ca0.3MnO3 films
    Ziese, M
    Sena, SP
    Blythe, HJ
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 202 (2-3) : 292 - 300
  • [7] Anisotropic magnetoresistance and planar Hall effect in epitaxial films of La0.7Ca0.3MnO3
    Naftalis, N.
    Bason, Y.
    Hoffman, J.
    Hong, X.
    Ahn, C. H.
    Klein, L.
    JOURNAL OF APPLIED PHYSICS, 2009, 106 (02)
  • [8] Inhomogeneous transport in heteroepitaxial La0.7Ca0.3MnO3/SrTiO3 multilayers
    Jo, MH
    Mathur, ND
    Evetts, JE
    Blamire, MG
    Bibes, M
    Fontcuberta, J
    APPLIED PHYSICS LETTERS, 1999, 75 (23) : 3689 - 3691
  • [9] Inhomogeneous transport in heteroepitaxial La0.7Ca0.3MnO3/SrTiO3 multilayers
    Department of Materials Science, University of Cambridge, Cambridge CB2 3QZ, United Kingdom
    不详
    Appl Phys Lett, 23 (3689-3691):
  • [10] Domain structures and superdislocations of La0.7Ca0.3MnO3 thin films grown on SrTiO3 substrates
    Ding, Yong
    He, Jiaqing
    JOURNAL OF CRYSTAL GROWTH, 2007, 306 (02) : 437 - 443
12345