Magneto Elastic Modes in Ferro or Ferrimagnetic Polycristals

G. Le Blevennec, I. Brard
1997 Journal de Physique IV : Proceedings  
We propose a new method to compute the dimensional variations of fem or ferro magnetic materials induced by an electromagnetic wave. The algorithm used derives from a mechanical finite element method to solve stress and strain states of a solid. Magnetostriction is written using a quadratic relationship between deformation and magnetization. The results of the numerical computation for nickel samples show the complete frequency spectrum of magneto elastic modes of free standing or clamped
more » ... . Experimental data obtained by measuring frequency dispersion permeabilities shows the coupling rays which are within 3.5% agreement with the computed frequencies of magneto elastic modes .
doi:10.1051/jp4:1997170 fatcat:cpqiefadmng4nnv5our3dnrbx4