Phase diagram with an enhanced spin-glass region of the mixed Ising-XY magnet LiHoxEr1-xF4

J. O. Piatek; B. Dalla Piazza; N. Nikseresht; N. Tsyrulin; I. Zivkovic; K. W. Krämer; M. Laver; K. Prokes; S. Matas; N. B. Christensen; H. M. Rønnow

doi:10.1103/PhysRevB.88.014408

Phase diagram with an enhanced spin-glass region of the mixed Ising-XY magnet LiHo_xEr_1-xF₄

J. O. Piatek, B. Dalla Piazza, N. Nikseresht, N. Tsyrulin, I. Zivkovic, K. W. Krämer, M. Laver, K. Prokes, S. Matas, N. B. Christensen, H. M. Rønnow

Department of Physics

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Abstract

We present the experimental phase diagram of LiHo_xEr_1-xF₄, a dilution series of dipolar-coupled model magnets. The phase diagram was determined using a combination of ac susceptibility and neutron
scattering. Three unique phases in addition to the Ising ferromagnet LiHoF₄ and the XY antiferromagnet LiErF₄ have been identified. Below x=0.86, an embedded spin-glass phase is observed, where a spin glass exists within the ferromagnetic structure. Below x=0.57, an Ising spin glass is observed consisting of frozen needlelike clusters. For x∼0.3–0.1, an antiferromagnetically coupled spin glass occurs. A reduction of T_C(x) for the ferromagnet is observed which disobeys the mean-field predictions that worked for LiHo_xY_1-xF₄.

Original language	English
Journal	Physical Review B
Volume	88
Issue number	1
Pages (from-to)	014408
ISSN	1098-0121
DOIs	https://doi.org/10.1103/PhysRevB.88.014408
Publication status	Published - 2013

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title = "Phase diagram with an enhanced spin-glass region of the mixed Ising-XY magnet LiHoxEr1-xF4",

abstract = "We present the experimental phase diagram of LiHoxEr1-xF4, a dilution series of dipolar-coupled model magnets. The phase diagram was determined using a combination of ac susceptibility and neutron scattering. Three unique phases in addition to the Ising ferromagnet LiHoF4 and the XY antiferromagnet LiErF4 have been identified. Below x=0.86, an embedded spin-glass phase is observed, where a spin glass exists within the ferromagnetic structure. Below x=0.57, an Ising spin glass is observed consisting of frozen needlelike clusters. For x∼0.3–0.1, an antiferromagnetically coupled spin glass occurs. A reduction of TC(x) for the ferromagnet is observed which disobeys the mean-field predictions that worked for LiHoxY1-xF4.",

author = "Piatek, {J. O.} and {Dalla Piazza}, B. and N. Nikseresht and N. Tsyrulin and I. Zivkovic and Kr{\"a}mer, {K. W.} and M. Laver and K. Prokes and S. Matas and Christensen, {N. B.} and R{\o}nnow, {H. M.}",

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doi = "10.1103/PhysRevB.88.014408",

language = "English",

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T1 - Phase diagram with an enhanced spin-glass region of the mixed Ising-XY magnet LiHoxEr1-xF4

AU - Piatek, J. O.

AU - Dalla Piazza, B.

AU - Nikseresht, N.

AU - Tsyrulin, N.

AU - Zivkovic, I.

AU - Krämer, K. W.

AU - Laver, M.

AU - Prokes, K.

AU - Matas, S.

AU - Christensen, N. B.

AU - Rønnow, H. M.

PY - 2013

Y1 - 2013

N2 - We present the experimental phase diagram of LiHoxEr1-xF4, a dilution series of dipolar-coupled model magnets. The phase diagram was determined using a combination of ac susceptibility and neutron scattering. Three unique phases in addition to the Ising ferromagnet LiHoF4 and the XY antiferromagnet LiErF4 have been identified. Below x=0.86, an embedded spin-glass phase is observed, where a spin glass exists within the ferromagnetic structure. Below x=0.57, an Ising spin glass is observed consisting of frozen needlelike clusters. For x∼0.3–0.1, an antiferromagnetically coupled spin glass occurs. A reduction of TC(x) for the ferromagnet is observed which disobeys the mean-field predictions that worked for LiHoxY1-xF4.

AB - We present the experimental phase diagram of LiHoxEr1-xF4, a dilution series of dipolar-coupled model magnets. The phase diagram was determined using a combination of ac susceptibility and neutron scattering. Three unique phases in addition to the Ising ferromagnet LiHoF4 and the XY antiferromagnet LiErF4 have been identified. Below x=0.86, an embedded spin-glass phase is observed, where a spin glass exists within the ferromagnetic structure. Below x=0.57, an Ising spin glass is observed consisting of frozen needlelike clusters. For x∼0.3–0.1, an antiferromagnetically coupled spin glass occurs. A reduction of TC(x) for the ferromagnet is observed which disobeys the mean-field predictions that worked for LiHoxY1-xF4.

U2 - 10.1103/PhysRevB.88.014408

DO - 10.1103/PhysRevB.88.014408

M3 - Journal article

SN - 1098-0121

VL - 88

SP - 014408

JO - Physical Review B

JF - Physical Review B

IS - 1

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