High-field ferromagnetic resonance in fine particles

M. Respaud, M. Goiran, F. Yang, J. M. Broto, T. Ould Ely, C. Amiens, B. Chaudret, S. Askenazy

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We investigate high-field ferromagnetic resonance of superparamagnetic particles with uniaxial anisotropy. In this case, since the field is large enough to saturate the magnetization, the thermal orientational fluctuations of the magnetic moment of the particle are negligible. Thus, we derive the dynamic susceptibility of the system on the basis of an independent particle model. High-field ferromagnetic resonance has been performed on fine cobalt particles. The analysis of the spectra obtained at different frequencies allows us to estimate the effective magnetic anisotropy, the gyromagnetic ratio, and the transverse relaxation time.

Original languageEnglish
Pages (from-to)580-583
Number of pages4
JournalPhysica B: Condensed Matter
Volume246-247
Publication statusPublished - May 29 1998
Externally publishedYes

Fingerprint

Ferromagnetic resonance
ferromagnetic resonance
Magnetic anisotropy
Cobalt
Magnetic moments
Relaxation time
Magnetization
Anisotropy
anisotropy
cobalt
magnetic moments
relaxation time
magnetic permeability
magnetization
estimates
Hot Temperature

Keywords

  • Fine particles
  • High-field ferromagnetic resonance

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Respaud, M., Goiran, M., Yang, F., Broto, J. M., Ould Ely, T., Amiens, C., ... Askenazy, S. (1998). High-field ferromagnetic resonance in fine particles. Physica B: Condensed Matter, 246-247, 580-583.

High-field ferromagnetic resonance in fine particles. / Respaud, M.; Goiran, M.; Yang, F.; Broto, J. M.; Ould Ely, T.; Amiens, C.; Chaudret, B.; Askenazy, S.

In: Physica B: Condensed Matter, Vol. 246-247, 29.05.1998, p. 580-583.

Research output: Contribution to journalArticle

Respaud, M, Goiran, M, Yang, F, Broto, JM, Ould Ely, T, Amiens, C, Chaudret, B & Askenazy, S 1998, 'High-field ferromagnetic resonance in fine particles', Physica B: Condensed Matter, vol. 246-247, pp. 580-583.
Respaud M, Goiran M, Yang F, Broto JM, Ould Ely T, Amiens C et al. High-field ferromagnetic resonance in fine particles. Physica B: Condensed Matter. 1998 May 29;246-247:580-583.
Respaud, M. ; Goiran, M. ; Yang, F. ; Broto, J. M. ; Ould Ely, T. ; Amiens, C. ; Chaudret, B. ; Askenazy, S. / High-field ferromagnetic resonance in fine particles. In: Physica B: Condensed Matter. 1998 ; Vol. 246-247. pp. 580-583.
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