Magnetic properties of the quasicrystal approximant Au65Ga21Tb14

Kazuhiro Nawa; Maxim Avdeev; Asuka Ishikawa; Hiroyuki Takakura; Chin Wei Wang; Daisuke Okuyama; Ryo Murasaki; Ryuji Tamura; Taku J. Sato

doi:10.1103/PhysRevMaterials.7.054412

Magnetic properties of the quasicrystal approximant Au65Ga21Tb14

Kazuhiro Nawa, Maxim Avdeev, Asuka Ishikawa, Hiroyuki Takakura, Chin Wei Wang, Daisuke Okuyama, Ryo Murasaki, Ryuji Tamura, Taku J. Sato

IMRAM - Division of Inorganic Material Research

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The magnetic properties of the quasicrystal approximant Au65Ga21Tb14 were investigated using magnetization and neutron diffraction experiments. The temperature dependences of the magnetic susceptibility and magnetization curve indicate dominant ferromagnetic interactions, whereas a whirling antiferromagnetic order was observed in neutron diffraction experiments. In the antiferromagnetic phase, the magnetic moments are aligned almost perpendicular to a pseudofivefold symmetry axis, which corresponds to the easy-axis direction of a Tb atom. Magnetic properties similar to those of Au72Al14Tb14 in spite of the substantial difference in the Au concentration suggest the robustness of the easy-axis anisotropy against the chemical environment.

Original language	English
Article number	054412
Journal	Physical Review Materials
Volume	7
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevMaterials.7.054412
Publication status	Published - 2023 May

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10.1103/PhysRevMaterials.7.054412

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title = "Magnetic properties of the quasicrystal approximant Au65Ga21Tb14",

abstract = "The magnetic properties of the quasicrystal approximant Au65Ga21Tb14 were investigated using magnetization and neutron diffraction experiments. The temperature dependences of the magnetic susceptibility and magnetization curve indicate dominant ferromagnetic interactions, whereas a whirling antiferromagnetic order was observed in neutron diffraction experiments. In the antiferromagnetic phase, the magnetic moments are aligned almost perpendicular to a pseudofivefold symmetry axis, which corresponds to the easy-axis direction of a Tb atom. Magnetic properties similar to those of Au72Al14Tb14 in spite of the substantial difference in the Au concentration suggest the robustness of the easy-axis anisotropy against the chemical environment.",

author = "Kazuhiro Nawa and Maxim Avdeev and Asuka Ishikawa and Hiroyuki Takakura and Wang, {Chin Wei} and Daisuke Okuyama and Ryo Murasaki and Ryuji Tamura and Sato, {Taku J.}",

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T1 - Magnetic properties of the quasicrystal approximant Au65Ga21Tb14

AU - Nawa, Kazuhiro

AU - Avdeev, Maxim

AU - Ishikawa, Asuka

AU - Takakura, Hiroyuki

AU - Wang, Chin Wei

AU - Okuyama, Daisuke

AU - Murasaki, Ryo

AU - Tamura, Ryuji

AU - Sato, Taku J.

PY - 2023/5

Y1 - 2023/5

N2 - The magnetic properties of the quasicrystal approximant Au65Ga21Tb14 were investigated using magnetization and neutron diffraction experiments. The temperature dependences of the magnetic susceptibility and magnetization curve indicate dominant ferromagnetic interactions, whereas a whirling antiferromagnetic order was observed in neutron diffraction experiments. In the antiferromagnetic phase, the magnetic moments are aligned almost perpendicular to a pseudofivefold symmetry axis, which corresponds to the easy-axis direction of a Tb atom. Magnetic properties similar to those of Au72Al14Tb14 in spite of the substantial difference in the Au concentration suggest the robustness of the easy-axis anisotropy against the chemical environment.

AB - The magnetic properties of the quasicrystal approximant Au65Ga21Tb14 were investigated using magnetization and neutron diffraction experiments. The temperature dependences of the magnetic susceptibility and magnetization curve indicate dominant ferromagnetic interactions, whereas a whirling antiferromagnetic order was observed in neutron diffraction experiments. In the antiferromagnetic phase, the magnetic moments are aligned almost perpendicular to a pseudofivefold symmetry axis, which corresponds to the easy-axis direction of a Tb atom. Magnetic properties similar to those of Au72Al14Tb14 in spite of the substantial difference in the Au concentration suggest the robustness of the easy-axis anisotropy against the chemical environment.

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Magnetic properties of the quasicrystal approximant Au65Ga21Tb14

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