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Dirty spin ice: The effect of dilution on spin freezing in Dy2Ti2O7
Snyder, J. Slusky, Joanna Cava, R. J. Schiffer, P.
Snyder, J.
Slusky, Joanna
Cava, R. J.
Schiffer, P.
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Abstract
We have studied spin freezing in the diluted spin ice compound Dy2−xYxTi2O7 where the nonmagnetic Y ions replace the magnetic Dy ions on the frustrated pyrochlore lattice. Magnetic ac and dc 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 icelike 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=16K involves the development of local correlations among the spins.
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2002-08-30
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American Physical Society
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Slusky_2002.pdf
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Snyder, J., Slusky, J. S., Cava, R. J., & Schiffer, P. (2002). Dirty spin ice: The effect of dilution on spin freezing in Dy 2 Ti 2 O 7. Physical Review B, 66(6), 064432.