Phase diagram of a three-dimensional antiferromagnet with random magnetic anisotropy

Felio A. Perez; Pavel Borisov; Trent A. Johnson; Tudor D. Stanescu; Robbyn Trappen; Mikel B. Holcomb; David Lederman; M. R. Fitzsimmons; Adam A. Aczel; Tao Hong

doi:10.1103/PhysRevLett.114.097201

Phase diagram of a three-dimensional antiferromagnet with random magnetic anisotropy

Felio A. Perez, Pavel Borisov, Trent A. Johnson, Tudor D. Stanescu, Robbyn Trappen, Mikel B. Holcomb, David Lederman, M. R. Fitzsimmons, Adam A. Aczel, Tao Hong

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Abstract

Three-dimensional antiferromagnets with random magnetic anisotropy (RMA) that have been experimentally studied to date have competing two-dimensional and three-dimensional exchange interactions which can obscure the authentic effects of RMA. The magnetic phase diagram of FexNi1-xF2 epitaxial thin films with true random single-ion anisotropy was deduced from magnetometry and neutron scattering measurements and analyzed using mean-field theory. Regions with uniaxial, oblique, and easy-plane anisotropies were identified. A RMA-induced glass region was discovered where a Griffiths-like breakdown of long-range spin order occurs.

Original language	English
Article number	097201
Journal	Physical Review Letters
Volume	114
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.114.097201
State	Published - Mar 4 2015

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title = "Phase diagram of a three-dimensional antiferromagnet with random magnetic anisotropy",

abstract = "Three-dimensional antiferromagnets with random magnetic anisotropy (RMA) that have been experimentally studied to date have competing two-dimensional and three-dimensional exchange interactions which can obscure the authentic effects of RMA. The magnetic phase diagram of FexNi1-xF2 epitaxial thin films with true random single-ion anisotropy was deduced from magnetometry and neutron scattering measurements and analyzed using mean-field theory. Regions with uniaxial, oblique, and easy-plane anisotropies were identified. A RMA-induced glass region was discovered where a Griffiths-like breakdown of long-range spin order occurs.",

author = "Perez, \{Felio A.\} and Pavel Borisov and Johnson, \{Trent A.\} and Stanescu, \{Tudor D.\} and Robbyn Trappen and Holcomb, \{Mikel B.\} and David Lederman and Fitzsimmons, \{M. R.\} and Aczel, \{Adam A.\} and Tao Hong",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

month = mar,

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doi = "10.1103/PhysRevLett.114.097201",

language = "English",

volume = "114",

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T1 - Phase diagram of a three-dimensional antiferromagnet with random magnetic anisotropy

AU - Perez, Felio A.

AU - Borisov, Pavel

AU - Johnson, Trent A.

AU - Stanescu, Tudor D.

AU - Trappen, Robbyn

AU - Holcomb, Mikel B.

AU - Lederman, David

AU - Fitzsimmons, M. R.

AU - Aczel, Adam A.

AU - Hong, Tao

PY - 2015/3/4

Y1 - 2015/3/4

N2 - Three-dimensional antiferromagnets with random magnetic anisotropy (RMA) that have been experimentally studied to date have competing two-dimensional and three-dimensional exchange interactions which can obscure the authentic effects of RMA. The magnetic phase diagram of FexNi1-xF2 epitaxial thin films with true random single-ion anisotropy was deduced from magnetometry and neutron scattering measurements and analyzed using mean-field theory. Regions with uniaxial, oblique, and easy-plane anisotropies were identified. A RMA-induced glass region was discovered where a Griffiths-like breakdown of long-range spin order occurs.

AB - Three-dimensional antiferromagnets with random magnetic anisotropy (RMA) that have been experimentally studied to date have competing two-dimensional and three-dimensional exchange interactions which can obscure the authentic effects of RMA. The magnetic phase diagram of FexNi1-xF2 epitaxial thin films with true random single-ion anisotropy was deduced from magnetometry and neutron scattering measurements and analyzed using mean-field theory. Regions with uniaxial, oblique, and easy-plane anisotropies were identified. A RMA-induced glass region was discovered where a Griffiths-like breakdown of long-range spin order occurs.

UR - https://www.scopus.com/pages/publications/84924359783

U2 - 10.1103/PhysRevLett.114.097201

DO - 10.1103/PhysRevLett.114.097201

M3 - Article

AN - SCOPUS:84924359783

SN - 0031-9007

VL - 114

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 097201

ER -

Phase diagram of a three-dimensional antiferromagnet with random magnetic anisotropy

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