Dependences of frequencies on a field in spectrum of the magnetostatic
surface wave and their use for definition of the magnetic parameters of
the ferrite films
V. V. Shagaev, Tun Tun Lin
Bauman Moscow State Technical University, Kaluga Branch
The paper is received on January 16, 2015
Abstract:
The equation characterizing a magnetostatic surface wave in a film from a
viewpoint of the wave frequency dependence on the magnetizing field strength is
deduced. The peculiarity of the equation consists in the fact that it doesn't
depend on wave number. The analysis of the equation of the frequency dependence
on a field in films of the cubic ferrites with orientations of type {100},
{110}, {111} is executed. In this case the first and the second constants of
cubic anisotropy of ferrite were taken into account. On
the basis of the deduced equation the method of measurement of the films magnetic
parameters is developed. Results of the experimental investigations in which the
dependences of the effective magnetization and the magnetic crystallographic
anisotropy field on temperature in a film of iron-yttrium garnet was defined
are given.
Key words: magnetostatic
wave, ferrites, yttrium iron garnet, magnetic anisotropy, magnetization.