High-temperature transport properties of La0.67Ca0.33MnO3 films

Authors
Westerburg, W Jakob, G Martin, F Adrian, H
Citation
W. Westerburg et al., High-temperature transport properties of La0.67Ca0.33MnO3 films, J MAGN MAGN, 197, 1999, pp. 536-538
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
197
Year of publication
1999
Pages
536 - 538
Database
ISI
SICI code
0304-8853(199905)197:<536:HTPOLF>2.0.ZU;2-0
Abstract
The giant negative magnetoresistance in manganites has been investigated fr om the Curie temperature T-c up to 600 K (2.6 T-c) in magnetic fields up to 8 T. Nonadiabatic small polaron hopping can successfully describe the temp erature dependence of the resistivity. The magnetic held influence on the a ctivation energy is explained by the interaction of unclustered ions with s mall spin clusters of four ions. (C) 1999 Elsevier Science B.V. All rights reserved.