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Phase separation and enhanced magnetoresistance in the strained epitaxial La0.625Ca0.375MnO3 (001) films.
- Source :
-
Journal of Applied Physics . Mar2012, Vol. 111 Issue 6, p066104. 3p. 4 Graphs. - Publication Year :
- 2012
-
Abstract
- La0.625Ca0.375MnO3 films have been epitaxially grown on the (LaAlO3)0.3(Sr2AlTaO6)0.35 (001) substrates at different oxygen pressures and show varying tetragonal distortion. Results indicate a tendency that larger tetragonal distortion can stabilize the antiferromagnetic-insulator phase in the thin films. Colossal magnetoresistance (CMR) and anisotropic magnetoresistance (AMR) have been greatly enhanced only in the strained films over a broad temperature, probably responding to the anisotropic fluctuation of the nanoscale orientation-ordered patterns near the temperature of the phase separation region or metal-insulator transition. Hence, the inhomogeneous phase competition may contribute to the CMR and the extraordinary AMR effect for manganite devices. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MAGNETORESISTANCE
*EPITAXY
*THIN films
*SEPARATION (Technology)
*PHYSICS
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 111
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 73959921
- Full Text :
- https://doi.org/10.1063/1.3695376