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Study of the magnetic order in chromium spinel systems


 
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1. Title Title of document Study of the magnetic order in chromium spinel systems
 
2. Creator Author's name, affiliation, country M. Hamedoun; Laboratoire de Physique du Solide, Université Sidi Mohammed Ben Abdellah, Faculté des sciences, BP1796, Fès; Morocco
 
2. Creator Author's name, affiliation, country K. Bouslykhane; Laboratoire de Physique du Solide, Université Sidi Mohammed Ben Abdellah, Faculté des sciences, BP1796, Fès; Morocco
 
2. Creator Author's name, affiliation, country R. Masrour; Laboratoire de Physique du Solide, Université Sidi Mohammed Ben Abdellah, Faculté des sciences, BP1796, Fès; Morocco
 
2. Creator Author's name, affiliation, country F. Talbi; Laboratoire de Physique du Solide, Université Sidi Mohammed Ben Abdellah, Faculté des sciences, BP1796, Fès; Morocco
 
2. Creator Author's name, affiliation, country A. Hourmatallah; Laboratoire de Physique du Solide, Université Sidi Mohammed Ben Abdellah, Faculté des sciences, BP1796, Fès Equipe de Physique du Solide, Ecole Normale Supérieure, BP 5206, Bensouda, Fès
 
2. Creator Author's name, affiliation, country N. Benzakour; Laboratoire de Physique du Solide, Université Sidi Mohammed Ben Abdellah, Faculté des sciences, BP1796, Fès; Morocco
 
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4. Description Abstract

We present a study of the magnetic properties of the A1-x CuxCr2X4 (A=Dp,Zn,....; X=S,Se,O,...)chromium spinel systems. Using the mean field theory, we have evaluated the nearest neighbour, the next-neighbour super-exchange, and the third next nearest neighbour interaction J1(x), J2(x) and J3(x), respectively for the Zn1-xCuxCr2Se4and J1(x), J2(x) for the Cd1-xCuxCr2Se4systems in the whole range of concentration 0≤x≤1.

By using the high-temperature series expansions combined with the Padé approximants method, we have obtained the magnetic phase diagrams in Tc versus dilution c.

A spin glass phase is predicted for intermediate range of concentration. The obtained results are in agreement with experimental ones obtained by magnetic measurements for the systems studied. The critical exponents associated with the magnetic susceptibility g and the correlation lengths n have been deduced. The obtained values are comparable to those of 3D Heisenberg model, and are insensitive to the dilution c.
 
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7. Date (YYYY-MM-DD) 15-03-2011
 
8. Type Status & genre Peer-reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://revues.imist.ma/index.php/MJCM/article/view/179
 
11. Source Title; vol., no. (year) Moroccan Journal of Condensed Matter; Vol 8 (2007)
 
12. Language English=en en
 
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15. Rights Copyright and permissions Copyright (c)