PHASE-TRANSITIONS IN A FERRIMAGNETIC HEISENBERG MULTILAYER - A MONTE-CARLO STUDY

Citation
L. Veiller et al., PHASE-TRANSITIONS IN A FERRIMAGNETIC HEISENBERG MULTILAYER - A MONTE-CARLO STUDY, Journal of magnetism and magnetic materials, 184(1), 1998, pp. 55-61
Citations number
20
Categorie Soggetti
Material Science","Physics, Condensed Matter
ISSN journal
03048853
Volume
184
Issue
1
Year of publication
1998
Pages
55 - 61
Database
ISI
SICI code
0304-8853(1998)184:1<55:PIAFHM>2.0.ZU;2-#
Abstract
Using a Monte Carlo method, the magnetic properties of a Heisenberg mu ltilayer system consisting of four alternating ferromagnetic layers (A and B) with different spills and interaction constants are examined. The effects of sampling size, antiferromagnetic interlayer coupling (J (AB)) and disordered interfaces on the specific heat and magnetisation thermal variation are investigated. For multilayers with steep interf aces, it is shown that the thermal variation of the specific heat exhi bits two peaks, but only a single-phase transition occurs. The transit ion temperature is independent on J,, in the investigated range, On th e other hand, this temperature depends on the kind of the interfaces. (C) 1998 Elsevier Science B.V. All rights reserved.