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VOLUME 32 (1980) | ISSUE 4 | PAGE 308
Unique features of the parametric excitation of nuclear magnons in antiferromagnetic materials in the presence of magnetic field modulation
Regularly spaced peaks have been found in the dependence of the threshold of parallel UHF pumping of nuclear magnons in MnC03 and CsMnF3 on the magnetic field modulation frequency. A model of general character is proposed that explains these features qualitatively, is based on taking account of the large changes in the phase of parametric magnons under modulation conditions.