The theory is developed in the kinematic appгoximation fоr crystals containing magnetic and nonuniform electric fields. Equations аге derived fоr the intensity and polarization of the radiation emitted bу the nucleus, together with the scattering amplitude fоr а nucleus, the coherent-scattering cross section fоr а crystal, and the polarization of the radiation in Bragg peaks when the quadrupole interaction is small compaгed with the magnetic one. The diffraction is discussed in deta1l fоr yttriurn garnet fеrritе γ_3Fе_2(FеО_4)_3.
Кафедра физики твердого тела
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