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Phase Diagram of Ferrimagnetic System with Triangular Symmetry: Spin and Anisotropy Effects


 
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1. Title Title of document Phase Diagram of Ferrimagnetic System with Triangular Symmetry: Spin and Anisotropy Effects
 
2. Creator Author's name, affiliation, country M. Aouzi; Laboratoire de Magnétisme & de Physique des Matériaux, Faculté des Sciences Ben M’sik, Département de Physique, B.P 7955, Casablanca 20453; Morocco
 
2. Creator Author's name, affiliation, country M. El Hafidi; Laboratoire de Magnétisme & de Physique des Matériaux, Faculté des Sciences Ben M’sik, Département de Physique, B.P 7955, Casablanca 20453; Morocco
 
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4. Description Abstract

The magnetic properties (phase diagram and magnetization) of a ferrimagnetic system, consisting of two magnetic sublattices (A and B ) with different spins (SA = ½ and SB = ½ ) and different inter-actions coupling together, are investigated within the framework of the effective -field theory with correlations. Furthermore, each considered sublattice has in-plane triangular symmetry requiring a coordination number of magnetic atoms z = 6 which may affect the general magnetic behavior of the system.

The effects of crystal-field interaction DB in the sublattice B (with SB i  1/2) on the magnetic properties are examined in detail. Because of the higher coordination number and different kinds of interactions acting on the system of spins, we find a number of interesting phenomena: (i) the temperature dependence of the total magnetization shows many characteristic behaviors depending on DB and SB, (ii) the presence of compensation points is conditioned by the given values of different parameters while the second order transition temperatures are studied according to each specific circumstance. The aspects of interest in this study is mainly the higher coordination number of magnetic species and the realistic interactions which are taken into account. This model can be relevant for understanding the magnetic behaviors of the new class of lamellar oxides AMO2 (A = Li, Na, Na,..; M = Ni, Fe, Co,..).
 
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7. Date (YYYY-MM-DD) 10-03-2011
 
8. Type Status & genre Peer-reviewed Article
 
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9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://revues.imist.ma/index.php/MJCM/article/view/97
 
11. Source Title; vol., no. (year) Moroccan Journal of Condensed Matter; Vol 5, No 1 (2004)
 
12. Language English=en en
 
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15. Rights Copyright and permissions Copyright (c)