NMR and orientational phase transitions in orthoferrites
Zvezdin A.K.
A method based on symmetry theory is proposed for the determination of the anisotropy of the hyperfine field in magnetically ordered crystals. The temperature dependence of the NMR frequencies following spin reorientation in orthoferrites is considered. The behavior of the NMR frequencies in orientational phase transitions is considered on the basis of the magnetic phase diagram of the orthoferrite.