TITLE

Epitaxial growth and characterization of Eu0.5Sr0.5CoO3 thin films by off-axis sputtering

AUTHOR(S)
Daeyoung Kwon; Youngsu Wu; Bongju Kim; Kim, Bog G.; Hwang, Harold Y.
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p122505
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the epitaxial growth and physical properties of Eu0.5Sr0.5CoO3 (ESCO) thin films deposited on (001) LaAlO3 (LAO) and (001) SrTiO3 (STO) substrates by off-axis rf sputtering. The magnetic properties of a grown film are governed by the crystallinity of the thin film and strain effects due to the substrate. The temperature-dependent resistivity of an optimized ESCO thin film on a LAO substrate shows a characteristic sudden decrease near the ferromagnetic transition temperature, indicating metallic double-exchange-like behavior, while the resistivity of ESCO on a STO substrate displays insulatinglike behavior because of substrate strain. These results suggest that optimized ESCO film on LAO is ideal as a bottom electrode for strained dielectric and ferroelectric heterostructures.
ACCESSION #
44374775

 

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