Magnetic susceptibility of the frustrated spinels ZnCr2O4, MgCr2O4 and CdCr2O4

Details Magnetic susceptibility of the frustrated spinels ZnCr2O4, MgCr2O4 and CdCr2O4 Magnetic susceptibility of the frustrated spinels ZnCr2O4, MgCr2O4 and CdCr2O4

2009-05-29

arxiv.org/abs/0905.4903v1

J. Phys.: Conf. Ser. 200, 032032 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 1 figure, 1 table, conference

Scientific paper

10.1088/1742-6596/200/3/032032

We analyzed the magnetic susceptibilities of several Cr spinels using two recent models for the geometrically frustrated pyrochlore lattice, the Quantum Tetrahedral Mean Field model and a Generalized Constant Coupling model. Both models can describe the experimental data for ACr2 O4 (with A = Zn, Mg, and Cd) satisfactorily, with the former yielding a somewhat better agreement with experiment for A = Zn, Mg. The obtained exchange constants for nearest and next-nearest neighbors are discussed.

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