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VOLUME 27 (1978) | ISSUE 6 | PAGE 345
Inhomogeneous state of a system of parametrically excited nuclear spin
Using the dependence of the position of the antiferromagnetic-resonance line on the temperature of the nuclear magnetic system in MnC03, we investigated the state of the nuclear magnetic system at a different level of parametric excitation of the nuclear spin waves. It is shown that the additional increase of the above-threshold susceptibility is due to a finite change of the temperature of the nuclear system. The distribution of the nuclear temperature (the concentration of the nuclear spin waves) in the sample is inhomogeneous in a wide range of variation of the pump-field amplitude.