SPECTROMETER FOR STUDYING MAGNETIC-RESONANCE AND NONLINEAR ACOUSTIC PHENOMENA

A pulsed magnetoacoustic spectrometer for studying magnetic resonance and nonlinear magnetoacoustic effects at frequencies from 500 to 1000 MHz and temperatures from 4.2 to 300 K is described. The spectrometer sensitivity at a frequency of 664 MHz is - 100 dB/W as measured from s ound attenuation, The design of an original acoustic resonator is pres ented, The spectrometer feasibilities are shown on the example of stud y of the acoustic nuclear magnetic resonance and acoustic spin echo in ''easy-plane'' antiferromagnetics.