Orbital ordering of intermediate-spin state of Co3+ in Sr 3YCo4O10.5

Hironori Nakao; Tetsuya Murata; Daisuke Bizen; Youichi Murakami; Kenji Ohoyama; Kazuyoshi Yamada; Shintaro Ishiwata; Wataru Kobayashi; Ichiro Terasaki

doi:10.1143/JPSJ.80.023711

Orbital ordering of intermediate-spin state of Co³⁺ in Sr ₃YCo₄O_10.5

Hironori Nakao, Tetsuya Murata, Daisuke Bizen, Youichi Murakami, Kenji Ohoyama, Kazuyoshi Yamada, Shintaro Ishiwata, Wataru Kobayashi, Ichiro Terasaki

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

33 Citations (Scopus)

Abstract

The orbital ordering and spin state in the room-temperature ferromagnet Sr₃YCo₄O_10.5 were investigated by a resonant X-ray scattering technique. A resonating signal with a σ → π' scattering component was observed at (h00), where h = 2n + 1 (n: integer), near the 1s → e_g transition energy of Co. This provides direct evidence of not only e_g orbital ordering but also the existence of the intermediate-spin (IS) state. Moreover, we suggest that the ferrimagnetism is induced by the eg orbital ordering of the IS state of Co³⁺. The peculiar e_g orbital, spin-state, and magnetic orderings are also discussed.

Original language	English
Article number	023711
Journal	journal of the physical society of japan
Volume	80
Issue number	2
DOIs	https://doi.org/10.1143/JPSJ.80.023711
Publication status	Published - 2011 Feb
Externally published	Yes

Keywords

Co intermediate spin-state
Orbital ordering
Resonant X-ray scattering
Spin-state ordering

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.80.023711

Cite this

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title = "Orbital ordering of intermediate-spin state of Co3+ in Sr 3YCo4O10.5",

abstract = "The orbital ordering and spin state in the room-temperature ferromagnet Sr3YCo4O10.5 were investigated by a resonant X-ray scattering technique. A resonating signal with a σ → π' scattering component was observed at (h00), where h = 2n + 1 (n: integer), near the 1s → eg transition energy of Co. This provides direct evidence of not only eg orbital ordering but also the existence of the intermediate-spin (IS) state. Moreover, we suggest that the ferrimagnetism is induced by the eg orbital ordering of the IS state of Co3+. The peculiar eg orbital, spin-state, and magnetic orderings are also discussed.",

keywords = "Co intermediate spin-state, Orbital ordering, Resonant X-ray scattering, Spin-state ordering",

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T1 - Orbital ordering of intermediate-spin state of Co3+ in Sr 3YCo4O10.5

AU - Nakao, Hironori

AU - Murata, Tetsuya

AU - Bizen, Daisuke

AU - Murakami, Youichi

AU - Ohoyama, Kenji

AU - Yamada, Kazuyoshi

AU - Ishiwata, Shintaro

AU - Kobayashi, Wataru

AU - Terasaki, Ichiro

PY - 2011/2

Y1 - 2011/2

N2 - The orbital ordering and spin state in the room-temperature ferromagnet Sr3YCo4O10.5 were investigated by a resonant X-ray scattering technique. A resonating signal with a σ → π' scattering component was observed at (h00), where h = 2n + 1 (n: integer), near the 1s → eg transition energy of Co. This provides direct evidence of not only eg orbital ordering but also the existence of the intermediate-spin (IS) state. Moreover, we suggest that the ferrimagnetism is induced by the eg orbital ordering of the IS state of Co3+. The peculiar eg orbital, spin-state, and magnetic orderings are also discussed.

AB - The orbital ordering and spin state in the room-temperature ferromagnet Sr3YCo4O10.5 were investigated by a resonant X-ray scattering technique. A resonating signal with a σ → π' scattering component was observed at (h00), where h = 2n + 1 (n: integer), near the 1s → eg transition energy of Co. This provides direct evidence of not only eg orbital ordering but also the existence of the intermediate-spin (IS) state. Moreover, we suggest that the ferrimagnetism is induced by the eg orbital ordering of the IS state of Co3+. The peculiar eg orbital, spin-state, and magnetic orderings are also discussed.

KW - Co intermediate spin-state

KW - Orbital ordering

KW - Resonant X-ray scattering

KW - Spin-state ordering

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