Spin-orbit coupling inactivity of Co2+ ion in geometrically frustrated magnet GeCo2O4

Keisuke Tomiyasu; Ayaka Tominaga; Shigeo Hara; Hirohiko Sato; Tadataka Watanabe; Shin Ichi Ikeda; Haruhiro Hiraka; Kazuaki Iwasa; Kazuyoshi Yamada

doi:10.1088/1742-6596/320/1/012038

Spin-orbit coupling inactivity of Co²⁺ ion in geometrically frustrated magnet GeCo₂O₄

Keisuke Tomiyasu, Ayaka Tominaga, Shigeo Hara, Hirohiko Sato, Tadataka Watanabe, Shin Ichi Ikeda, Haruhiro Hiraka, Kazuaki Iwasa, Kazuyoshi Yamada

SCI - Physics

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

4 Citations (Scopus)

Abstract

We report single-crystal neutron diffraction studies on a spinel antiferromagnet GeCo₂O₄, which exhibits magnetic order with a trigonal propagation vector and tetragonal lattice expansion (c/a ≃ 1.001) below T_N 21 = K. For this inconsistency between spin and lattice in symmetry, magnetic Bragg reflections with a tetragonal propagation vector were discovered below T_N. We discuss spin and orbital states of Co²⁺ ion underlying the new magnetic component.

Original language	English
Article number	012038
Journal	Journal of Physics: Conference Series
Volume	320
DOIs	https://doi.org/10.1088/1742-6596/320/1/012038
Publication status	Published - 2011
Event	International Conference on Frustration in Condensed Matter, ICFCM - Sendai, Japan Duration: 2011 Jan 11 → 2011 Jan 14

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1088/1742-6596/320/1/012038

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Spin-orbit coupling inactivity of Co²⁺ ion in geometrically frustrated magnet GeCo₂O₄. / Tomiyasu, Keisuke; Tominaga, Ayaka; Hara, Shigeo; Sato, Hirohiko; Watanabe, Tadataka; Ikeda, Shin Ichi; Hiraka, Haruhiro; Iwasa, Kazuaki; Yamada, Kazuyoshi.

In: Journal of Physics: Conference Series, Vol. 320, 012038, 2011.

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

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abstract = "We report single-crystal neutron diffraction studies on a spinel antiferromagnet GeCo2O4, which exhibits magnetic order with a trigonal propagation vector and tetragonal lattice expansion (c/a ≃ 1.001) below TN 21 = K. For this inconsistency between spin and lattice in symmetry, magnetic Bragg reflections with a tetragonal propagation vector were discovered below TN. We discuss spin and orbital states of Co2+ ion underlying the new magnetic component.",

author = "Keisuke Tomiyasu and Ayaka Tominaga and Shigeo Hara and Hirohiko Sato and Tadataka Watanabe and Ikeda, {Shin Ichi} and Haruhiro Hiraka and Kazuaki Iwasa and Kazuyoshi Yamada",

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T1 - Spin-orbit coupling inactivity of Co2+ ion in geometrically frustrated magnet GeCo2O4

AU - Tomiyasu, Keisuke

AU - Tominaga, Ayaka

AU - Hara, Shigeo

AU - Sato, Hirohiko

AU - Watanabe, Tadataka

AU - Ikeda, Shin Ichi

AU - Hiraka, Haruhiro

AU - Iwasa, Kazuaki

AU - Yamada, Kazuyoshi

PY - 2011

Y1 - 2011

N2 - We report single-crystal neutron diffraction studies on a spinel antiferromagnet GeCo2O4, which exhibits magnetic order with a trigonal propagation vector and tetragonal lattice expansion (c/a ≃ 1.001) below TN 21 = K. For this inconsistency between spin and lattice in symmetry, magnetic Bragg reflections with a tetragonal propagation vector were discovered below TN. We discuss spin and orbital states of Co2+ ion underlying the new magnetic component.

AB - We report single-crystal neutron diffraction studies on a spinel antiferromagnet GeCo2O4, which exhibits magnetic order with a trigonal propagation vector and tetragonal lattice expansion (c/a ≃ 1.001) below TN 21 = K. For this inconsistency between spin and lattice in symmetry, magnetic Bragg reflections with a tetragonal propagation vector were discovered below TN. We discuss spin and orbital states of Co2+ ion underlying the new magnetic component.

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DO - 10.1088/1742-6596/320/1/012038

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AN - SCOPUS:81055125385

VL - 320

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

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T2 - International Conference on Frustration in Condensed Matter, ICFCM

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Spin-orbit coupling inactivity of Co²⁺ ion in geometrically frustrated magnet GeCo₂O₄

Abstract

ASJC Scopus subject areas

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