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MA: Magnetismus

MA 20: Poster: Films(1-36) Transp(37-56) Ex.Bias(57-67) Spindyn(68-80) Micromag(81-95) Particle(96-109) Imag.+Surface(110-113) Spinelectr(114-122) Theory+Micromag(123-131) Spinstr+Aniso(132-142) MagMat(143-156) Meas(157,158) MolMag+Kondo(159-162) Postdead(163-)

MA 20.33: Poster

Tuesday, March 28, 2006, 15:15–19:15, P1

Temperature dependence of interlayer exchange coupling — •Stephan Schwieger, Jochen Kienert, and Wolfgang Nolting — Humboldt-Universit{∖No-dqa}t zu Berlin*Institut für Physik*Theoretische Festk{∖No-dqo}rperphysik*Newtonstra{∖ss}e 15*D-12489 Berlin

Temperature dependent FMR-measurements of exchange coupled Ni-Co films are analysed using a microscopic theory for ultrathin metallic systems. The mechanism governing the temperature dependence of the anisotropy coefficients and the interlayer exchange coupling is identified and discussed. Both quantities are reduced with increasing temperature. This behavior is found to be caused by magnon excitations.