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The anisotropic magnetoresistance in epitaxial thin films and polycrystalline samples of [La.sub.0.65][Ca.sub.0.35]Mn[O.sub.3]
- Source :
- Journal of Applied Physics. April 1, 2009, Vol. 105 Issue 7, 07D706-1-07D706-3
- Publication Year :
- 2009
-
Abstract
- The anisotropic magnetoresistance (AMR) of epitaxial thin film and polycrystalline samples of [La.sub.0.65][Ca.sub.0.35]Mn[O.sub.3] is measured. At the temperature below the metal-insulator transition (MIT), the AMR of the polycrystalline samples is larger than that of the epitaxial films, showing that the anisotropy of the spin-polarized tunneling of the charge carriers across grain boundaries in a magnetic filed is responsible for the low temperature behavior.
- Subjects :
- Calcium compounds -- Magnetic properties
Calcium compounds -- Thermal properties
Lanthanum -- Magnetic properties
Lanthanum -- Electric properties
Manganese alloys -- Magnetic properties
Manganese alloys -- Structure
Manganese alloys -- Thermal properties
Spin coupling -- Analysis
Physics
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 105
- Issue :
- 7
- Database :
- Gale General OneFile
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.205131672