Abstract
The magnetic properties of the NiCr2O4 chromite are investigated and compared with similar properties of the NiFe1.1Cr0.9O4 nickel ferrite-chromite material. It is found for the first time that the tetrahedral (A) sublattice of the NiCr2O4 chromite is responsible for the total magnetic moment. Moreover, it is revealed that the NiCr2O4 chromite exhibits a giant magnetostriction of the paraprocess (λ para ∼ 200×10−6) and an anomalously large volume magnetostriction (ω ∼ 500×10−6) at a temperature of 4.2 K in magnetic fields up to ∼50 kOe. The inference is made that the observed paraprocess is caused by an increase in the degree of noncollinearity of the magnetic moments induced in the octahedral (B) sublattice of the NiCr2O4 chromite in an external magnetic field.
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Translated from Fizika Tverdogo Tela, Vol. 44, No. 4, 2002, pp. 731–733.
Original Russian Text Copyright © 2002 by Goryaga, Antoshina, Kokorev, Chursin.
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Goryaga, A.N., Antoshina, L.G., Kokorev, A.I. et al. Magnetic structure of the NiCr2O4 nickel chromite. Phys. Solid State 44, 759–762 (2002). https://doi.org/10.1134/1.1470572
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DOI: https://doi.org/10.1134/1.1470572