Effect of magnesium substitution on the magnetic properties of diluted magnetic spinels Ni1-xMgxFe2O4

The magnetic properties of Ni-Mg ferrites with compositions Ni1-xMgxFe2O4, have been studied using the mean field theory and high temperature series expansion theory (HTSE), extrapolated with the Padé approximants method. The nearest neighbour super-exchange interactions for intra-sites and inter-si...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 186; no. 1
Main Authors Salmi, S, El Azhari, M, El Grini, A, Hourmatallah, A, Benzakour, N, Bouslykhane, K, Marzouk, A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2017
Subjects
Ferrites
High temperature
Magnesium
Magnetic permeability
Magnetic properties
Mean field theory
Series expansion
Transition temperature
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Summary:The magnetic properties of Ni-Mg ferrites with compositions Ni1-xMgxFe2O4, have been studied using the mean field theory and high temperature series expansion theory (HTSE), extrapolated with the Padé approximants method. The nearest neighbour super-exchange interactions for intra-sites and inter-sites of the Ni-Mg ferrites in the range 0 ≤ x ≤ 1 have been computed using the distribution method of magnetic cations. The transition temperature TC is calculated as a function of Mg concentration. The critical exponent associated with the magnetic susceptibility was then deduced. The obtained results are in good agreement with experimental results and critical exponent values are consistent with those suggested by the universality hypothesis.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/186/1/012016