Influence of chemical prehistory on the colossal magnetoresistance of La0.7Ca0.3MnO3 ceramics

Authors
Shlyakhtin, OA Oh, YJ Tretyakov, YD
Citation
Oa. Shlyakhtin et al., Influence of chemical prehistory on the colossal magnetoresistance of La0.7Ca0.3MnO3 ceramics, SOL ST COMM, 111(12), 1999, pp. 711-715
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
111
Issue
12
Year of publication
1999
Pages
711 - 715
Database
ISI
SICI code
0038-1098(1999)111:12<711:IOCPOT>2.0.ZU;2-U
Abstract
Evolution of magnetoresistance at H = 1.5 T during sintering of ceramics is studied for La0.7Ca0.3MnO3 samples obtained using solid state (SS) synthes is and freeze-drying (FD) methods. Significant enhancement of magnetoresist ance peak values and lowering of peak temperature for dense SS samples can be related to larger oxygen non-stoichiometry due to complicated oxygen dif fusion or influence of La-doped MnOx inclusions, generating new pinning cen ters. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.