μsR study of the "anti-glass" LiH o0.045Y 0.955F 4

J. Rodriguez; S. R. Dunsiger; J. B. Kycia; G. J. MacDougall; J. A. Quilliam; P. L. Russo; A. T. Savici; Y. J. Uemura; C. R. Wiebe; G. M. Luke

doi:10.1016/j.physb.2005.11.161

μsR study of the "anti-glass" LiH _o0.045Y _0.955F ₄

J. Rodriguez, S. R. Dunsiger, J. B. Kycia, G. J. MacDougall, J. A. Quilliam, P. L. Russo, A. T. Savici, Y. J. Uemura, C. R. Wiebe, G. M. Luke

Research output: Contribution to journal › Conference article › peer-review

8 Scopus citations

Abstract

LiHoF4 is a dipolar-coupled Ising ferromagnet with Tc=1.53K. If sufficient dilution is introduced into the system by substituting magnetic Ho atoms with nonmagnetic Y, it becomes glassy. Even though theoretical predictions state that the glassy state should persist down to the lowest Ho concentrations, it has been observed that the system runs into what has been called the "antiglass" phase. The nature of the "antiglass" state is still not understood, and not much experimental data is available. We studied this system at the microscopic scale using μSR. Zero field and longitudinal field measurements were performed from room temperature down to 20 mK. We found that the Ho spins remain dynamic down to 20 mK with a fluctuation rate equal to 2.6 MHz in a longitudinal field of 16 G.

Original language	English
Pages (from-to)	13-16
Number of pages	4
Journal	Physica B: Physics of Condensed Matter
Volume	374-375
DOIs	https://doi.org/10.1016/j.physb.2005.11.161
State	Published - Mar 31 2006
Externally published	Yes
Event	Proceedings of the Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance - Duration: Aug 8 2005 → Aug 12 2005

Funding

We appreciate the hospitality of the TRIUMF TCMMS User Facility. Research at McMaster is supported by NSERC, the Canadian Institute for Advanced Research and MMO-EMK. Research at Columbia is supported by NSF-DMR-0102752 and 0502706.

Funders	Funder number
MMO-EMK
NSF-DMR-0102752	0502706
Canadian Institute for Advanced Research
Natural Sciences and Engineering Research Council of Canada

Keywords

Antiglass
Magnetism
Spin glass

Access to Document

10.1016/j.physb.2005.11.161

Cite this

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title = "μsR study of the {"}anti-glass{"} LiH o0.045Y 0.955F 4 ",

abstract = "LiHoF4 is a dipolar-coupled Ising ferromagnet with Tc=1.53K. If sufficient dilution is introduced into the system by substituting magnetic Ho atoms with nonmagnetic Y, it becomes glassy. Even though theoretical predictions state that the glassy state should persist down to the lowest Ho concentrations, it has been observed that the system runs into what has been called the {"}antiglass{"} phase. The nature of the {"}antiglass{"} state is still not understood, and not much experimental data is available. We studied this system at the microscopic scale using μSR. Zero field and longitudinal field measurements were performed from room temperature down to 20 mK. We found that the Ho spins remain dynamic down to 20 mK with a fluctuation rate equal to 2.6 MHz in a longitudinal field of 16 G.",

keywords = "Antiglass, Magnetism, Spin glass",

author = "J. Rodriguez and Dunsiger, {S. R.} and Kycia, {J. B.} and MacDougall, {G. J.} and Quilliam, {J. A.} and Russo, {P. L.} and Savici, {A. T.} and Uemura, {Y. J.} and Wiebe, {C. R.} and Luke, {G. M.}",

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journal = "Physica B: Physics of Condensed Matter",

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note = "Proceedings of the Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance ; Conference date: 08-08-2005 Through 12-08-2005",

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TY - JOUR

T1 - μsR study of the "anti-glass" LiH o0.045Y 0.955F 4

AU - Rodriguez, J.

AU - Dunsiger, S. R.

AU - Kycia, J. B.

AU - MacDougall, G. J.

AU - Quilliam, J. A.

AU - Russo, P. L.

AU - Savici, A. T.

AU - Uemura, Y. J.

AU - Wiebe, C. R.

AU - Luke, G. M.

PY - 2006/3/31

Y1 - 2006/3/31

N2 - LiHoF4 is a dipolar-coupled Ising ferromagnet with Tc=1.53K. If sufficient dilution is introduced into the system by substituting magnetic Ho atoms with nonmagnetic Y, it becomes glassy. Even though theoretical predictions state that the glassy state should persist down to the lowest Ho concentrations, it has been observed that the system runs into what has been called the "antiglass" phase. The nature of the "antiglass" state is still not understood, and not much experimental data is available. We studied this system at the microscopic scale using μSR. Zero field and longitudinal field measurements were performed from room temperature down to 20 mK. We found that the Ho spins remain dynamic down to 20 mK with a fluctuation rate equal to 2.6 MHz in a longitudinal field of 16 G.

AB - LiHoF4 is a dipolar-coupled Ising ferromagnet with Tc=1.53K. If sufficient dilution is introduced into the system by substituting magnetic Ho atoms with nonmagnetic Y, it becomes glassy. Even though theoretical predictions state that the glassy state should persist down to the lowest Ho concentrations, it has been observed that the system runs into what has been called the "antiglass" phase. The nature of the "antiglass" state is still not understood, and not much experimental data is available. We studied this system at the microscopic scale using μSR. Zero field and longitudinal field measurements were performed from room temperature down to 20 mK. We found that the Ho spins remain dynamic down to 20 mK with a fluctuation rate equal to 2.6 MHz in a longitudinal field of 16 G.

KW - Antiglass

KW - Magnetism

KW - Spin glass

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