Phys. Rev. Lett. 73, 336–339 (1994)Using Ferromagnetic Resonance as a Sensitive Method to Study Temperature Dependence of Interlayer Exchange CouplingReceived 27 December 1993; published in the issue dated 11 July 1994 We have developed longitudinal pumping and angular dependent ferromagnetic resonance techniques to investigate the temperature dependence of the interlayer exchange field Hex on a series of Co/Ru/Co trilayer films. Our results indicate, for the first time, that the variation of Hex with temperature follows roughly the relationship Hex∝(T/T0)/sinh(T/T0) as predicted by theoretical models. In addition, no evidence of the biquadratic exchange term was observed in these samples. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.73.336
DOI:
10.1103/PhysRevLett.73.336
PACS:
75.30.Ds, 75.70.-i, 76.60.-k
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