Size dependent modifications in the physical properties of chemical solution deposition and pulsed laser deposition grown La0.7Ca0.3MnO3 manganite thin films: A comparative study

被引:0
|
作者
Markna, J. H. [1 ]
Vachhani, P. S. [1 ]
Shah, N. A. [2 ]
John, J. [3 ]
Rana, D. S. [3 ]
Malik, S. K. [3 ]
Kuberkar, D. G. [1 ]
机构
[1] Saurashtra Univ, Dept Phys, Rajkot 360005, Gujarat, India
[2] Saurashtra Univ, Dept Elect, Rajkot 360005, Gujarat, India
[3] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
关键词
ELECTRONIC TRANSPORT; MAGNETORESISTANCE;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Grain-size dependence of electronic transport and magnetoresistance (MR) properties of nanostructured La0.7Ca0.3MnO3 (LCMO) manganite thin films grown using pulsed laser deposition(PLD) and chemical solution deposition (CSD) have been compared in the context of the grain size, surface and strain modification due to the different synthesis techniques used as well as due to substrate induced magnetic anisotropy. CSD grown LCMO thin films shows the grain size similar to 70 nm while grain size similar to 150 nm is exhibited by PLD grown films resulting in an appreciable change in the strain and low temperature magnetoresistance (LTMR). In CSD grown film, nanostructured grains exhibit sharp magnetic orientation in the absence of strain resulting in the observation of large maximum TCR value similar to 10.1% K-1 at 235 K as compared to PLD grown film (TCR value similar to 27% K-1 at 194 K). Epitaxial thin films grown by the CSD technique are strain free and possess nanostructured grains size resulting into better physical properties as compared to PLD grown LCMO films.
引用
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页码:123 / 127
页数:5
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