Magnetic properties of NiAlxFe2−xO4 spinels: A mean field approach and high-temperature series expansions study

Author:

Salmi S.1,Masrour R.2,El Grini A.1,Bouslykhane K.1,Hourmatallah A.3,Benzakour N.1,Hamedoun M.4

Affiliation:

1. Laboratoire de Physique du Solide, Université Sidi Mohammed Ben Abdellah, Faculté des Sciences Dhar Mahraz, BP 1796, Fes, Morocco

2. Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, Route Sidi Bouzid-BP 63 46000 Safi, Morocco

3. Equipe de Physique du Solide, Laboratoire LIPI, Ecole Normale Supérieure, BP 5206, Bensouda, Fes, Morocco

4. MAScIR Foundation, Institut of Nanomaterials and Nanotechnologies, Materials & Nanomaterials Center, B.P. 10100-Rabat, Morocco

Abstract

The magnetic properties of NiAl[Formula: see text]Fe[Formula: see text]O4 (NAFO) spinels were studied. Influence of Al doping on magnetic properties of NiFe2O4 spinel were examined. The exchange interactions in NAFO were obtained. The general expression of saturation magnetization and the critical temperature were obtained using mean field theory. The high-temperature series expansions combined with the Padé approximant are given to determine the critical temperature of NAFO. The critical exponent associated with the magnetic susceptibility [Formula: see text] was also deduced. The obtained results were in good agreement with magnetic measurement.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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