TITLE

Coherent nanoscale islands on La[sub 0.5]Ca[sub 0.5]MnO[sub 3] thin films and the enhancement of magnetoresistance

AUTHOR(S)
Gong, W. Z.; Zhao, B. R.; Cai, C.; Lin, Y.
PUB. DATE
August 2001
SOURCE
Applied Physics Letters;8/6/2001, Vol. 79 Issue 6
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A low cost reproducible fabrication process has been developed to prepare La[sub 0.5]Ca[sub 0.5]MnO[sub 3] (LCMO) films with well distributed uniform nanoscale dots using pulsed-laser deposition. It was found that the growth of the dots was closely related to the strain in the film during the growth process. The diameter and density of dots could be controlled within the range of 30–120 nm and 2×10[sup 8]–2×10[sup 9]/cm[sup 2], respectively. The magnetoresistance effect of such LCMO films is also enhanced, which may be caused by the spin-dependent scattering of carriers due to the existence of the dots. © 2001 American Institute of Physics.
ACCESSION #
4936901

 

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