Spin dynamics of the ferromagnetic transition in iron mixed-valence complexes, (n-CnH2n+1)4N[FeIIFeIII(dto)3] (dto=C2O2S2, n=3-5) by μSR

Masaya Enomoto; Noriyuki Kida; Isao Watanabe; Takao Suzuki; Norimichi Kojima

doi:10.1016/j.physb.2008.11.117

Spin dynamics of the ferromagnetic transition in iron mixed-valence complexes, (n-C_nH_2n+1)₄N[Fe^IIFe^III(dto)₃] (dto=C₂O₂S₂, n=3-5) by μSR

Masaya Enomoto, Noriyuki Kida, Isao Watanabe, Takao Suzuki, Norimichi Kojima

研究成果: Article › 査読

6 被引用数 (Scopus)

抄録

We have investigated the ferromagnetic transition in iron mixed-valence complexes, (n-C_nH_2n+1)₄N[Fe^IIFe^III(dto)₃] (dto=C₂O₂S₂, n=3-5) by means of μSR measurements. The sharp drop of initial asymmetry and the strong enhancement of depolarization rate around 20 K prove the development of the ferromagnetic ordering state in n=3-5. Moreover, the decoupling process by the longitudinal-field muon spin relaxation (μSR) shows the existence of strong internal magnetic field for all the complexes. On the other hand, there are not any muon spin precession signals in high-resolution time spectra, which suggests the existence of disorder in the ferromagnetic ordering state for these complexes.

本文言語	English
ページ（範囲）	642-644
ページ数	3
ジャーナル	Physica B: Condensed Matter
巻	404
号	5-7
DOI	https://doi.org/10.1016/j.physb.2008.11.117
出版ステータス	Published - 2009 4月 15
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
電子工学および電気工学

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10.1016/j.physb.2008.11.117

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「Spin dynamics of the ferromagnetic transition in iron mixed-valence complexes, (n-C_nH_2n+1)₄N[Fe^IIFe^III(dto)₃] (dto=C₂O₂S₂, n=3-5) by μSR」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル

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title = "Spin dynamics of the ferromagnetic transition in iron mixed-valence complexes, (n-CnH2n+1)4N[FeIIFeIII(dto)3] (dto=C2O2S2, n=3-5) by μSR",

abstract = "We have investigated the ferromagnetic transition in iron mixed-valence complexes, (n-CnH2n+1)4N[FeIIFeIII(dto)3] (dto=C2O2S2, n=3-5) by means of μSR measurements. The sharp drop of initial asymmetry and the strong enhancement of depolarization rate around 20 K prove the development of the ferromagnetic ordering state in n=3-5. Moreover, the decoupling process by the longitudinal-field muon spin relaxation (μSR) shows the existence of strong internal magnetic field for all the complexes. On the other hand, there are not any muon spin precession signals in high-resolution time spectra, which suggests the existence of disorder in the ferromagnetic ordering state for these complexes.",

keywords = "Ferromagnetism, Iron mixed-valence complex",

author = "Masaya Enomoto and Noriyuki Kida and Isao Watanabe and Takao Suzuki and Norimichi Kojima",

note = "Funding Information: We are grateful to the staff of the PSI muon group for technical support. The μSR measurements were supported by the KEK-MSL Inter-University Program for Oversea Muon Facilities and a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan.",

year = "2009",

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doi = "10.1016/j.physb.2008.11.117",

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AU - Enomoto, Masaya

AU - Kida, Noriyuki

AU - Watanabe, Isao

AU - Suzuki, Takao

AU - Kojima, Norimichi

N1 - Funding Information: We are grateful to the staff of the PSI muon group for technical support. The μSR measurements were supported by the KEK-MSL Inter-University Program for Oversea Muon Facilities and a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan.

PY - 2009/4/15

Y1 - 2009/4/15

N2 - We have investigated the ferromagnetic transition in iron mixed-valence complexes, (n-CnH2n+1)4N[FeIIFeIII(dto)3] (dto=C2O2S2, n=3-5) by means of μSR measurements. The sharp drop of initial asymmetry and the strong enhancement of depolarization rate around 20 K prove the development of the ferromagnetic ordering state in n=3-5. Moreover, the decoupling process by the longitudinal-field muon spin relaxation (μSR) shows the existence of strong internal magnetic field for all the complexes. On the other hand, there are not any muon spin precession signals in high-resolution time spectra, which suggests the existence of disorder in the ferromagnetic ordering state for these complexes.

AB - We have investigated the ferromagnetic transition in iron mixed-valence complexes, (n-CnH2n+1)4N[FeIIFeIII(dto)3] (dto=C2O2S2, n=3-5) by means of μSR measurements. The sharp drop of initial asymmetry and the strong enhancement of depolarization rate around 20 K prove the development of the ferromagnetic ordering state in n=3-5. Moreover, the decoupling process by the longitudinal-field muon spin relaxation (μSR) shows the existence of strong internal magnetic field for all the complexes. On the other hand, there are not any muon spin precession signals in high-resolution time spectra, which suggests the existence of disorder in the ferromagnetic ordering state for these complexes.

KW - Ferromagnetism

KW - Iron mixed-valence complex

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