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

Research output: Contribution to journalArticle

4 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)642-644
Number of pages3
JournalPhysica B: Condensed Matter
Volume404
Issue number5-7
DOIs
Publication statusPublished - 2009 Apr 15
Externally publishedYes

Fingerprint

Spin dynamics
Depolarization
spin dynamics
Iron
Magnetic fields
valence
iron
muons
precession
depolarization
decoupling
asymmetry
disorders
augmentation
high resolution
magnetic fields

Keywords

  • Ferromagnetism
  • Iron mixed-valence complex

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

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. / Enomoto, Masaya; Kida, Noriyuki; Watanabe, Isao; Suzuki, Takao; Kojima, Norimichi.

In: Physica B: Condensed Matter, Vol. 404, No. 5-7, 15.04.2009, p. 642-644.

Research output: Contribution to journalArticle

@article{d5ff445666c8486993db9077fcf8c2c9,
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",
year = "2009",
month = "4",
day = "15",
doi = "10.1016/j.physb.2008.11.117",
language = "English",
volume = "404",
pages = "642--644",
journal = "Physica B: Condensed Matter",
issn = "0921-4526",
publisher = "Elsevier",
number = "5-7",

}

TY - JOUR

T1 - 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

AU - Enomoto, Masaya

AU - Kida, Noriyuki

AU - Watanabe, Isao

AU - Suzuki, Takao

AU - Kojima, Norimichi

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

UR - http://www.scopus.com/inward/record.url?scp=62949101110&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=62949101110&partnerID=8YFLogxK

U2 - 10.1016/j.physb.2008.11.117

DO - 10.1016/j.physb.2008.11.117

M3 - Article

VL - 404

SP - 642

EP - 644

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - 5-7

ER -