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Dirty Spin Ice: The Effect of Dilution on Spin Freezing in Dy2Ti2O7

J. Snyder·J. S. Slusky·R. J. Cava·P. Schiffer
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Abstract

We have studied spin freezing in the diluted spin ice compound Dy2-xYxTi2O7 where the non-magnetic Y ions replace the magnetic Dy ions on the frustrated pyrochlore lattice. Magnetic a.c. and d.c. susceptibility data are presented with an analysis of relaxation times for dilutions of x = 0, 0.1, 0.2, and 0.4. Site dilution apparently decreases the relative number of spins participating in the ice-like freezing near 16 K while leaving the freezing temperature unchanged. Correspondingly the distribution of relaxation times associated with the freezing is broadened only slightly with increasing dilution, suggesting that the freezing process observed near T = 16 K involves local correlations among the spins.

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J. Snyder, J. S. Slusky, R. J. Cava, P. Schiffer. 2002-05-01. Dirty Spin Ice: The Effect of Dilution on Spin Freezing in Dy2Ti2O7. https://doi.org/10.1103/physrevb.66.064432

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