SPIN-WAVE SURFACE PARAMETER CHARACTERIZATION OF MAGNETIC THIN FILM INTERFACES

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SPIN-WAVE SURFACE PARAMETER

CHARACTERIZATION OF MAGNETIC THIN FILM INTERFACES

H. Puszkarski

To cite this version:

H. Puszkarski. SPIN-WAVE SURFACE PARAMETER CHARACTERIZATION OF MAGNETIC THIN FILM INTERFACES. Journal de Physique Colloques, 1984, 45 (C5), pp.C5-325-C5-327.

�10.1051/jphyscol:1984547�. �jpa-00224165�

JOURNAL DE PHYSIQUE

Colloque C5, suppl6rnent

au

n04, Tome 45,

avril

1984

^page

C5-325

SPIN-WAVE SURFACE PARAMETER CHARAC.TERIZATION OF MAGNETIC T H I N F I L M INTERFACES

H. Puszkarski

I n s t i t u t e of Physics, A . Mickiewicz University, Poznali, Matejki 48/49, 60-769, PoZand

~bsum; - 1niti4e en,1958 avec des succ$s rapides, 19ktude des

- couches minces magnetinues par r6sonance d90ndes de

spin a, depuis, connu

un certain ralentisseme3t. Le present

rapport a pour but d$ montrer comment cette methode,

actuellement appliquee

aux

surfaces et interfaces magne(tiques, a pris un nouvel essor, On passe en revue les rgcents travaux exg6rimentaux, par r6sona.nce d9ondes de spin, portant sur les couches minces magnktiques ainsi que leur interprgtation thgorique basee sur le modhe

I1d'

inhomogBnBit6 de surfaceH irnpliqua.nt le parame'tre de blocage de ces ondes. Plus

spgcialement, on consid$re les effets lies

&

la prgsence, dans les spectres de resonance d'ondes de spin, des raies de

resonance correspondant aux magnons de surface. Dans le cadre de 19analyse, les pa,ram&tres de blocage des deux surfaces de la couche mince sont d6termin6s en ayant recours aux intensit&

relatives des raies de r&sonance,de volume et de surface.

Ge traitement du groblsm? nous revsle les me'canismes

microscopiques qui sont a la base 9es anisotropies spQcifiques auxsurfaceset a m interfaces magnetiques. On montre comment la mgthode pourra trouves de nouvelles applications dans l'ktude des interactions magngtiques ayant lieu dans le corps du film ainsi qu'am interfaces.

Abstract - The rapid progress in spin-wave resonance /s:R/

studies of magnetic thin films, initiated in 1958, has since aba,ted. This report is aimed at showing how the method, presently applied to the properties of magnetic surfaces and interfaces, has undergone a revival. We shall give a review of recent experimental

SLT\

work on monocrystalline magnetic thin films and its theoretical interpretation based on the

"surface inhomogeneityn model involving the spin-wave pinning parameter. Especial attention v~ill be given to effects related with the presence, in

S!IX

spectra, of resonance lines

corresponding to surface magnons. In the analysis, the pinning parameters of both surfaces of the film are determined by

having recourse to the relative intensities of bulk and surface resonance lines. This approach allows to achieve essential insight into the microscopic mechanisms which generate anisotropies on the magnetic surfaces and interfaces. The feasibility of novel applications of the method to the study of bulk and interface magnetic interactions will also be considered,

Article published online by EDP Sciences and available at http://dx.doi.org/10.1051/jphyscol:1984547

JOURNAL DE PHYSIQUE

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,,

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