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- Title
Characteristics of magnetic order in perovskite manganites La[sub 1-x]Ca[sub x]MnO[sub 3].
- Authors
Arbuzova, T. I.; Smolyak, I. B.; Naumov, S. V.; Samokhvalov, A. A.; Mostovshchikov, A. V.; Solin, N. I.
- Abstract
Solid solutions of the system La[sub 1-x]Ca[sub x]MnO[sub 3] are synthesized, and their magnetic and electrical properties are investigated. As x is increased, the crystal lattice changes symmetrically from an orthorhombic (x = 0 and x = 0.8) to a cubic structure (0 < x≤0.6 and x = 1). Nonstoichiometric LaMnO[sub 3] and compositions with a low Ca content (0 < x < 0.4) are collinear ferromagnets. A metal-insulator transition is observed in them near the Curie temperature. Compositions with 0.6≤x≤0.9 exhibit a semiconductor-type conductivity and an unusual temperature behavior of the magnetization and the susceptibility with very distinct Curie and Néel temperatures. The magnetic properties of the solid solutions are explained on the basis of the model of ferro-antiferromagnetic phase separation.
- Subjects
PEROVSKITE; MANGANITE; MAGNETIC semiconductors; PHYSICS
- Publication
Journal of Experimental & Theoretical Physics, 1999, Vol 89, Issue 5, p899
- ISSN
1063-7761
- Publication type
Article
- DOI
10.1134/1.558930