About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
IEEE Transactions on Magnetics
Paper
Magnetic properties of laser annealed garnet films as determined by FMR and bubbles statics
Abstract
The effects of high power laser irradiation upon the magnetic properties of Ga-substituted garnet films were studied by ferromagnetic resonance (FMR) and bubble statics. FMR measurements showed that for a certain range of laser power, annealing changes the magnetic properties in a layer located at the free surface, the thickness of which increases with increasing laser power P. For a sufficiently high P the whole film is transformed, and for even higher P the film is melted in a thin surface layer. The change of collapse field and stripe width as a function of P is fairly well explained by this model. The modification of the magnetic properties can be well explained by a migration of about 3% of Ga<sup>3+</sup> from the tetra-to the octahedrical site, but surprisingly the amount of Ga migration is independent of the laser power. © 1980 IEEE