Chemical Pressure Effects on Pyrochlore Spin Ice

Published

May 18, 2012

Author(s)

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

Abstract

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.

Citation

Physical Review Letters

Volume

108

Issue

20

Pub Type

Journals

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Keywords

spin ice, magnetism

Citation

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], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910548 (Accessed April 26, 2024)