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VOLUME 64 (1996) | ISSUE 3 | PAGE 160
Observation of parametric amplification of propagating dipole-exchange spin waves in yttrium iron garnet films
Amplification of a weak-signal spin wave by a strong pump spin wave propagating in an yttrium iron garnet film was observed for the first time. Theoretical explanation of the amplification phenomenon is suggested on the basis of four-wave parametric processes. PACS: 75.30.Ds, 75.40.Gb