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

J. C. Debnath; A. M. Strydom

doi:10.1016/j.jallcom.2014.09.178

Large low field magneto-resistance and temperature coefficient of resistance in La_0.8Ca_0.2MnO₃ epitaxial thin film

J. C. Debnath, A. M. Strydom

Physics

University of Johannesburg

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

An epitaxial La_0.8Ca_0.2MnO₃/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 La_0.8Ca_0.2MnO₃/LaAlO₃ (LCMO/LAO) thin film is a promising candidate of perovskites for novel electronic applications.

Original language	English
Pages (from-to)	7-11
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	621
DOIs	https://doi.org/10.1016/j.jallcom.2014.09.178
Publication status	Published - 5 Feb 2015

Keywords

Epitaxial thin film
Magnetoresistance
Pulsed laser deposition
Temperature coefficient of resistance

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2014.09.178

Cite this

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

abstract = "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.",

keywords = "Epitaxial thin film, Magnetoresistance, Pulsed laser deposition, Temperature coefficient of resistance",

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T1 - Large low field magneto-resistance and temperature coefficient of resistance in La0.8Ca0.2MnO3 epitaxial thin film

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AU - Strydom, A. M.

PY - 2015/2/5

Y1 - 2015/2/5

N2 - 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.

AB - 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.

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KW - Magnetoresistance

KW - Pulsed laser deposition

KW - Temperature coefficient of resistance

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