Magnetic ordering in the spin-ice candidate Ho2Ru 2O7

C. R. Wiebe; J. S. Gardner; S. J. Kim; G. M. Luke; A. S. Wills; B. D. Gaulin; J. E. Greedan; I. Swainson; Y. Qiu; C. Y. Jones

doi:10.1103/PhysRevLett.93.076403

Magnetic ordering in the spin-ice candidate Ho₂Ru ₂O₇

C. R. Wiebe, J. S. Gardner, S. J. Kim, G. M. Luke, A. S. Wills, B. D. Gaulin, J. E. Greedan, I. Swainson, Y. Qiu, C. Y. Jones

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41 Scopus citations

Abstract

The magnetic ordering transitions in spin-ice candidate material Ho ₂Ru₂O₇, which reveals two magnetic transitions at T ∼95 and ∼1.4K to long-range ordered states, were analyzed. A commercial SQUID magnetometer was used to measure magnetic properties between 2 and 600 K. Although there was short-ranged ordered state on Ho³⁺ sites well above 1.4K, it was found that Ru⁴⁺ ordering was enough of a perturbation of fragile spin-ice state to induce ordering upon Ho³⁺ site and drive system to order. The results show that Ho³⁺ ordering found in Ho₂Ru₂O₇ is due to small internal field produced by the Ru⁴⁺ ordering.

Original language	English
Article number	076403
Pages (from-to)	076403-1-076403-4
Journal	Physical Review Letters
Volume	93
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.93.076403
State	Published - Aug 13 2004
Externally published	Yes

Funding

C. R. W. would like to acknowledge support from NSERC in the form of a PDF. The authors would like to thank the financial support of NSERC, EMK, and CIAR. This work utilized facilities supported in part by the National Science Foundation under Agreement No. DMR-0086210. Work at Brookhaven is supported by the Division of Material Sciences, U.S. Department of Energy under Contract No. DE-AC02-98CH10996. The authors are also grateful for the technical support of the NPMR staff at Chalk River and Ross Erwin at NIST. A critical reading of this paper by Professor Gingras is appreciated.

Funders	Funder number
CIAR
Division of Material Sciences
EMK
National Science Foundation	DMR-0086210
U.S. Department of Energy	DE-AC02-98CH10996
Natural Sciences and Engineering Research Council of Canada

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10.1103/PhysRevLett.93.076403

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title = "Magnetic ordering in the spin-ice candidate Ho2Ru 2O7",

abstract = "The magnetic ordering transitions in spin-ice candidate material Ho 2Ru2O7, which reveals two magnetic transitions at T ∼95 and ∼1.4K to long-range ordered states, were analyzed. A commercial SQUID magnetometer was used to measure magnetic properties between 2 and 600 K. Although there was short-ranged ordered state on Ho3+ sites well above 1.4K, it was found that Ru4+ ordering was enough of a perturbation of fragile spin-ice state to induce ordering upon Ho3+ site and drive system to order. The results show that Ho3+ ordering found in Ho2Ru2O7 is due to small internal field produced by the Ru4+ ordering.",

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doi = "10.1103/PhysRevLett.93.076403",

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T1 - Magnetic ordering in the spin-ice candidate Ho2Ru 2O7

AU - Wiebe, C. R.

AU - Gardner, J. S.

AU - Kim, S. J.

AU - Luke, G. M.

AU - Wills, A. S.

AU - Gaulin, B. D.

AU - Greedan, J. E.

AU - Swainson, I.

AU - Qiu, Y.

AU - Jones, C. Y.

PY - 2004/8/13

Y1 - 2004/8/13

N2 - The magnetic ordering transitions in spin-ice candidate material Ho 2Ru2O7, which reveals two magnetic transitions at T ∼95 and ∼1.4K to long-range ordered states, were analyzed. A commercial SQUID magnetometer was used to measure magnetic properties between 2 and 600 K. Although there was short-ranged ordered state on Ho3+ sites well above 1.4K, it was found that Ru4+ ordering was enough of a perturbation of fragile spin-ice state to induce ordering upon Ho3+ site and drive system to order. The results show that Ho3+ ordering found in Ho2Ru2O7 is due to small internal field produced by the Ru4+ ordering.

AB - The magnetic ordering transitions in spin-ice candidate material Ho 2Ru2O7, which reveals two magnetic transitions at T ∼95 and ∼1.4K to long-range ordered states, were analyzed. A commercial SQUID magnetometer was used to measure magnetic properties between 2 and 600 K. Although there was short-ranged ordered state on Ho3+ sites well above 1.4K, it was found that Ru4+ ordering was enough of a perturbation of fragile spin-ice state to induce ordering upon Ho3+ site and drive system to order. The results show that Ho3+ ordering found in Ho2Ru2O7 is due to small internal field produced by the Ru4+ ordering.

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Magnetic ordering in the spin-ice candidate Ho₂Ru ₂O₇

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