Non-equilibrium Behavior of the Magnetization in the Helimagnetic Phases of the Rare Earth Alloys R1-xYx (R = Gd, Tb, Dy)

Teruo Yamazaki; Junno Ishiyama; Yosuke Noya; Mai Kurihara; Hiroshi Yaguchi

doi:10.1016/j.phpro.2015.12.125

Non-equilibrium Behavior of the Magnetization in the Helimagnetic Phases of the Rare Earth Alloys R_1-xY_x (R = Gd, Tb, Dy)

Teruo Yamazaki, Junno Ishiyama, Yosuke Noya, Mai Kurihara, Hiroshi Yaguchi

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

Abstract

We have performed DC and AC magnetization measurements for the rare-earth magnetic alloy systems Gd_0.62Y_0.38, Tb_0.86Y_0.14, and Dy_0.97Y_0.03. These materials commonly exhibit a proper helical magnetic structure, and a ferromagnetic structure at lower temperatures. In all of these materials, a difference between zero-field-cooled (ZFC) magnetization and field-cooled (FC) magnetization and a hysteresis loop in the M-H curve have been observed in the helimagnetic phases. The non-equilibrium behavior is possibly caused by a common nature, e. g., chiral domain structures. In addition to the above behavior, strong non-linearity of the magnetization and slow spin dynamics have been observed around the Ńeel temperature only in Gd_0.62Y_0.38. The spin-glass like behavior observed in Gd_0.62Y_0.38 could be related to a novel glassy state such as a helical-glass state.

Original language	English
Pages (from-to)	911-917
Number of pages	7
Journal	Physics Procedia
Volume	75
DOIs	https://doi.org/10.1016/j.phpro.2015.12.125
Publication status	Published - 2015 Jan 1
Externally published	Yes
Event	20th International Conference on Magnetism, ICM 2015 - Barcelona, Spain Duration: 2015 Jul 5 → 2015 Jul 10

Keywords

halimagnetic structure
non-equilibrium
rare-earth alloy

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1016/j.phpro.2015.12.125

Cite this

@article{6cdec41123d14656977273cca6f7f013,

title = "Non-equilibrium Behavior of the Magnetization in the Helimagnetic Phases of the Rare Earth Alloys R1-xYx (R = Gd, Tb, Dy)",

abstract = "We have performed DC and AC magnetization measurements for the rare-earth magnetic alloy systems Gd0.62Y0.38, Tb0.86Y0.14, and Dy0.97Y0.03. These materials commonly exhibit a proper helical magnetic structure, and a ferromagnetic structure at lower temperatures. In all of these materials, a difference between zero-field-cooled (ZFC) magnetization and field-cooled (FC) magnetization and a hysteresis loop in the M-H curve have been observed in the helimagnetic phases. The non-equilibrium behavior is possibly caused by a common nature, e. g., chiral domain structures. In addition to the above behavior, strong non-linearity of the magnetization and slow spin dynamics have been observed around the {\'N}eel temperature only in Gd0.62Y0.38. The spin-glass like behavior observed in Gd0.62Y0.38 could be related to a novel glassy state such as a helical-glass state.",

keywords = "halimagnetic structure, non-equilibrium, rare-earth alloy",

author = "Teruo Yamazaki and Junno Ishiyama and Yosuke Noya and Mai Kurihara and Hiroshi Yaguchi",

year = "2015",

month = jan,

day = "1",

doi = "10.1016/j.phpro.2015.12.125",

language = "English",

volume = "75",

pages = "911--917",

journal = "Physics Procedia",

issn = "1875-3884",

publisher = "Elsevier BV",

note = "20th International Conference on Magnetism, ICM 2015 ; Conference date: 05-07-2015 Through 10-07-2015",

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TY - JOUR

T1 - Non-equilibrium Behavior of the Magnetization in the Helimagnetic Phases of the Rare Earth Alloys R1-xYx (R = Gd, Tb, Dy)

AU - Yamazaki, Teruo

AU - Ishiyama, Junno

AU - Noya, Yosuke

AU - Kurihara, Mai

AU - Yaguchi, Hiroshi

PY - 2015/1/1

Y1 - 2015/1/1

N2 - We have performed DC and AC magnetization measurements for the rare-earth magnetic alloy systems Gd0.62Y0.38, Tb0.86Y0.14, and Dy0.97Y0.03. These materials commonly exhibit a proper helical magnetic structure, and a ferromagnetic structure at lower temperatures. In all of these materials, a difference between zero-field-cooled (ZFC) magnetization and field-cooled (FC) magnetization and a hysteresis loop in the M-H curve have been observed in the helimagnetic phases. The non-equilibrium behavior is possibly caused by a common nature, e. g., chiral domain structures. In addition to the above behavior, strong non-linearity of the magnetization and slow spin dynamics have been observed around the Ńeel temperature only in Gd0.62Y0.38. The spin-glass like behavior observed in Gd0.62Y0.38 could be related to a novel glassy state such as a helical-glass state.

AB - We have performed DC and AC magnetization measurements for the rare-earth magnetic alloy systems Gd0.62Y0.38, Tb0.86Y0.14, and Dy0.97Y0.03. These materials commonly exhibit a proper helical magnetic structure, and a ferromagnetic structure at lower temperatures. In all of these materials, a difference between zero-field-cooled (ZFC) magnetization and field-cooled (FC) magnetization and a hysteresis loop in the M-H curve have been observed in the helimagnetic phases. The non-equilibrium behavior is possibly caused by a common nature, e. g., chiral domain structures. In addition to the above behavior, strong non-linearity of the magnetization and slow spin dynamics have been observed around the Ńeel temperature only in Gd0.62Y0.38. The spin-glass like behavior observed in Gd0.62Y0.38 could be related to a novel glassy state such as a helical-glass state.

KW - halimagnetic structure

KW - non-equilibrium

KW - rare-earth alloy

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