We compute the phase diagram of the non-metallic compounds ZnCr_2pAl_2—2pS(Se)₄ and Zn_1—pCd_pCr₂S(Se)₄, for which we consider the bond-diluted Ising model on the spinel B-site (S.B.S.) lattice with competitive exchange interactions, and show that quenched randomness may cause fundamental changes in their low-temperature magnetic behaviour. Dilution and competition are found to be responsible of the spin glass phase and the percolation behaviour. The possible appearance of a reentrant spin glass phase is also mentioned.

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Volume219, Issue2

June 2000

Pages 383-388

Spin Glass and Percolation Behaviour on Chromium Spinels

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Spin Glass and Percolation Behaviour on Chromium Spinels

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