Resonance phenomena in domain boundary movement in ferrites

The frequency dependence of magnetic losses in certain ferrites over the frequency range 20–110 MHz is studied. A series of absorption lines was observed in many ferrites. On the basis of an investigation of the change in absorption spectrum as a function of the magnetic history of the specimen, the size of the powder particles, and the external magnetic field, it was concluded that the resonance lines observed are produced by domain boundary resonance.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 41–45, July, 1973.