Large low field magneto-resistance and temperature coefficient of resistance in La0.8Ca0.2MnO3 epitaxial thin film

被引：30
|
作者：
Debnath, J. C. [1 ]
Strydom, A. M. [1 ]
机构：
[1] Univ Johannesburg, Dept Phys, Highly Correlated Matter Res Grp, ZA-2006 Auckland Pk, South Africa
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 621卷
关键词：
Magnetoresistance; Temperature coefficient of resistance; Pulsed laser deposition; Epitaxial thin film; MAGNETIC ENTROPY CHANGE; GIANT MAGNETORESISTANCE; TRANSPORT-PROPERTIES; RESISTIVITY; DEPENDENCE;
D O I：
10.1016/j.jallcom.2014.09.178
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An epitaxial La0.8Ca0.2MnO3/LaAlO3 (LCMO/LAO) thin film was fabricated using the pulsed laser deposition (PLD) technique to evaluate the magnetoresistance (MR) and temperature coefficient of resistance (TCR). The LCMO film was about 200 nm in thickness and appeared to have a strong out-of-plane texture. A giant value of MR 73% and 57% for both the ab-plane and in the c-directions respectively are obtained at 1.5 T applied field. The values of TCR are about 14.2% K (1) and 11.5% K (1) for both the ab-plane and in the c-directions respectively in a wide temperature range. These results proved that La0.8Ca0.2MnO3/LaAlO3 (LCMO/LAO) thin film is a promising candidate of perovskites for novel electronic applications. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：7 / 11
页数：5
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