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

Research output: Contribution to journalConference article

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 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.

Original languageEnglish
Pages (from-to)911-917
Number of pages7
JournalPhysics Procedia
Volume75
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes
Event20th International Conference on Magnetism, ICM 2015 - Barcelona, Spain
Duration: 2015 Jul 52015 Jul 10

Fingerprint

rare earth alloys
magnetization
spin dynamics
spin glass
alternating current
rare earth elements
direct current
hysteresis
nonlinearity
glass
curves
temperature

Keywords

  • halimagnetic structure
  • non-equilibrium
  • rare-earth alloy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Non-equilibrium Behavior of the Magnetization in the Helimagnetic Phases of the Rare Earth Alloys R1-xYx (R = Gd, Tb, Dy). / Yamazaki, Teruo; Ishiyama, Junno; Noya, Yosuke; Kurihara, Mai; Yaguchi, Hiroshi.

In: Physics Procedia, Vol. 75, 01.01.2015, p. 911-917.

Research output: Contribution to journalConference article

Yamazaki, Teruo ; Ishiyama, Junno ; Noya, Yosuke ; Kurihara, Mai ; Yaguchi, Hiroshi. / Non-equilibrium Behavior of the Magnetization in the Helimagnetic Phases of the Rare Earth Alloys R1-xYx (R = Gd, Tb, Dy). In: Physics Procedia. 2015 ; Vol. 75. pp. 911-917.
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AU - Kurihara, Mai

AU - Yaguchi, Hiroshi

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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.

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