| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Calculation of Exchange Constants in Spinels Chromites ZnxCo1−xCr2O4 |
| R. Masrour1,2**, M. Hamedoun3, A. Benyoussef 2,3,4, E. K. Hlil5, O. Mounkachi3, H. El Moussaoui3 |
1Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, Safi, BP 46 63000, Morocco
2LMPHE, URAC 12, Faculté des Sciences, Université Mohamed V-Agdal, Rabat, Morocco
3Institute for Nanomaterials and Nanotechnologies, MAScIR, Rabat, Morocco
4Academie Hassan II des Sciences et Techniques, Rabat, Morocco
5Institut Néel, CNRS-UJF, B.P. 166, 38042 Grenoble Cedex, France |
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| Cite this article: |
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R. Masrour, M. Hamedoun, A. Benyoussef et al 2014 Chin. Phys. Lett. 31 037501 |
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Abstract The exchange interactions of the nearest-neighbor exchange constant between tetrahedral and octahedral sublattices (JAB(x)), nearest-neighbor exchange constant inside tetrahedral sublattice (JAA(x)) and nearest-neighbor exchange constant inside octahedral sublattice (JBB(x)) in cobalt and zinc chromites are calculated using the probability distribution. The Curie–Weiss temperature and the critical temperature are deduced using the mean field and the high temperature series expansion theories in ZnxCo1−xCr2O4. The critical exponent associated with the magnetic susceptibility (γ) is deduced for CoCr2O4.
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Received: 04 October 2013
Published: 28 February 2014
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| PACS: |
75.30.Et
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(Exchange and superexchange interactions)
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75.40.Cx
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(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
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74.25.Ha
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(Magnetic properties including vortex structures and related phenomena)
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