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Chemical Pressure Effects on Pyrochlore Spin Ice



H. D. Zhou, J. G. Cheng, A. M. Hallas, C. R. Wiebe, G. Li, L. Balicas, J. S. Zhou, J. B. Goodenough, Jason S. Gardner, E. S. Choi


Ho2Ge2O7 with the cubic pyrochlore structure was prepared by a high temperature high pressure technique. Detailed DC susceptibility, AC susceptibilty, and specific heat measurements confirm that it is a new spin ice. A comparison amoung the two sets of studied pyrochlore spin ices, Ho2Ge2O7 and Dy2B2O7 with B = Sn, Ti, Ge, shows that the application of chemical pressure through each set drives the system towards to the antiferromagnetic phase boundary from the spin ice region, which agrees with the prediction of the "dipolar spin ice" model of de Hertog and Gingras. Amoung all the studied pyrochlore spin ices, Dy2B2O7 has the smallest reation of J^ΗΗ/DΗΗ = 0.73.
Physical Review Letters


spin ice, magnetism


Zhou, H. , Cheng, J. , Hallas, A. , Wiebe, C. , Li, G. , Balicas, L. , Zhou, J. , Goodenough, J. , Gardner, J. and Choi, E. (2012), Chemical Pressure Effects on Pyrochlore Spin Ice, Physical Review Letters, [online], (Accessed April 17, 2024)
Created May 17, 2012, Updated October 12, 2021