PREPARATION, MAGNETIC AND TRANSPORT-PROPERTIES OF A(0.66)BA(0.34)MNO(3-GAMMA) (A = PR, ND, SM, EU, GD) PEROVSKITES

Authors
TROYANCHUK IO KOLESOVA IM SZYMCZAK H NABIALEK A
Citation
Io. Troyanchuk et al., PREPARATION, MAGNETIC AND TRANSPORT-PROPERTIES OF A(0.66)BA(0.34)MNO(3-GAMMA) (A = PR, ND, SM, EU, GD) PEROVSKITES, Journal of magnetism and magnetic materials, 176(2-3), 1997, pp. 267-271
Citations number
15
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
176
Issue
2-3
Year of publication
1997
Pages
267 - 271
Database
ISI
SICI code
0304-8853(1997)176:2-3<267:PMATOA>2.0.ZU;2-2
Abstract
The manganites A(0.66)Ba(0.34)MnO(3-gamma) (A = PZ Nd, Sm, Eu, Gd) wit h cubic perovskite structure have been synthesized. It is found that P r0.66Ba0.34MnO3 and Nd0.66Ba0.34MnO3 are ferromagnets while Sm-, Eu-an d Gd-containing samples exhibit spin-glass-like behavior. The decreasi ng oxygen content in A(0.66)Ba(0.34)MnO(3-gamma) (A = Pr, Nd) up to ga mma = 0.1 leads to the collapse of the long-range ferromagnetic order. The Nd0.66Ba0.34MnO3 exhibits giant magnetoresistance below T-e simil ar to 150 K. The results can be explained in terms of the model of sup erexchange interactions via oxygen. (C) 1997 Elsevier Science B.V. All rights reserved.