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  1. University of Yangon
  2. Department of Chemistry

Electrical transport properties and laser-induced voltage effect in La0.8Ca0.2MnO3 epitaxial thin films

http://hdl.handle.net/20.500.12678/0000001885
http://hdl.handle.net/20.500.12678/0000001885
5ed96689-8e84-49b6-8d82-31d308ab0b3c
c17dac5c-6d0b-499d-beec-bb6ae25cf2ef
Publication type
Journal article
Upload type
Publication
Title
Title Electrical transport properties and laser-induced voltage effect in La0.8Ca0.2MnO3 epitaxial thin films
Language en
Publication date 2014
Authors
Mya Theingi
Ma, Ji
Zhang, Hui
Cui, Qi
Yi, Jianhong
Chen, Qingming
Description
La0.8Ca0.2MnO3 (LCMO) thin films about 200 nm thickness were grown on untilted and tilted (5°, 10° and 15°) LaAlO3 (100) single crystal substrates by pulsed laser deposition technique. Electrical properties of the epitaxial thin films were studied by conventional four-probe technique and the anisotropic thermoelectric properties of the films grown on the tilted substrates have been investigated by laser-induced voltage (LIV) measurements. X-ray diffraction analysis and atomic force microscopy results show that the prepared LCMO thin films have a single phase and high crystalline quality. The remarkably large temperature coefficient of resistance (TCR) values (above 11 %/K) are observed in the all films. TCR value reaches 18 %/K on the film grown on 10° tilted substrate. The intensity of LIV signals monotonously increases with the tilting angles, and the largest signal is 148 mV with the fast time response 229 ns for the film grown on 15° tilted substrate.
Identifier http://uyr.uy.edu.mm/handle/123456789/176
Journal articles
Applied Physics A
114;(4)
Conference papaers
Books/reports/chapters
Thesis/dissertations
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