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Magnetic properties of NiAl $_{x}$ Fe $_{2 - x}$ O₄ spinels: A mean field approach and high-temperature series expansions study

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

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R. Masrour

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

E-mail Address: rachidmasrour@hotmail.com

Corresponding author.

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A. El Grini

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

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K. Bouslykhane

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

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A. Hourmatallah

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

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N. Benzakour

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

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, and

M. Hamedoun

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

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https://doi.org/10.1142/S0217979218500704Cited by:5 (Source: Crossref)

Abstract

The magnetic properties of NiAl $_{x}$ Fe $_{2 - x}$ 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 $γ$ was also deduced. The obtained results were in good agreement with magnetic measurement.

Keywords:

PACS: 75.30.Cr, 75.40.Cx, 74.25.Ha, 75.30.Et

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