| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-1025 - C8-1026 | |
| DOI | https://doi.org/10.1051/jphyscol:19888467 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1025-C8-1026
DOI: 10.1051/jphyscol:19888467
Dipartimento di Fisica and C.I.S.M. del Politecnico, C. Duca degli Abruzzi, 24, 10129
J. Phys. Colloques 49 (1988) C8-1025-C8-1026
DOI: 10.1051/jphyscol:19888467
BINARY MIXTURES OF FERRO- AND ANTIFERROMAGNETIC BONDS IN QUANTUM SPIN-1 MODELS : CRITICAL BEHAVIOR
C. BuzanoDipartimento di Fisica and C.I.S.M. del Politecnico, C. Duca degli Abruzzi, 24, 10129
Abstract
A quantum spin-1 model, describing a mixture of ferro- and antiferromagnetic bonds, is analyzed employing the effective Hamiltonian method extended to random systems. Uniform, staggered and spin-glass susceptibilities are introduced and Curie, Néel and spin-glass transition temperatures determined. The role anisotropy is examined.