Hyperfine Interactions

, Volume 163, Issue 1, pp 73–88

Mössbauer Spectra of Noninteracting Single-Domain Ferromagnetic Particles Including Superparamagnetic Relaxation: Simplification of the Multilevel Method

Authors

  • P. M. Déjardin
    • Lab. de Mathématiques et Physique pour les Systémes, Groupe de Physique MoléculaireUniversité de Perpignan
  • W. T. Coffey
    • Department of Electronics and Electrical EngineeringTrinity College
Article

DOI: 10.1007/s10751-004-5451-x

Cite this article as:
Déjardin, P.M. & Coffey, W.T. Hyperfine Interact (2005) 163: 73. doi:10.1007/s10751-004-5451-x

Abstract

A simple method of calculation of Mössbauer relaxation spectra of single-domain ferromagnetic particle assemblies is developed from Brown's model of coherent rotation of the magnetization utilizing matrix continued fractions to compute the lineshape. The method allows one to obtain a simple analytical formula for the lineshape in the strong relaxation limit, which provides results in agreement with numerical calculations and radically simplifies analysis of the spectra.

Keywords

Mössbauer relaxation spectrasuperparamagnetic relaxationsingle-domain ferromagnetic particlesmultilevel methodmatrix continued fraction method

Copyright information

© Springer 2006