Production of single-crystal laminated ferro-ferrite films and certain of their magnetic properties

A method is developed for producing single-crystal magnetic laminated films of ferrite-ferromagnetic composition based on chemical transport reactions. Certain magnetic properties of these films are investigated. It is established that the exchange interaction between the ferrite film and the ferromagnetic layer depends essentially on the thickness of the diffusion layer of the latter into the ferrite layer. This leads to almost simultaneous remagnetization of both films. It is postulated that the process of rotation of the magnetic moment in the direction of the external field begins in the ferrite film and passes smoothly first into the diffusion layer and then into the ferromagnetic film. Exchange coupling considerably decreases the coercive force of ferromagnetic layers grown on ferrite films.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp. 90–94, May, 1974.