Critical angles effect: Vanishing of cubic magnetocrystalline anisotropy in ferromagnetic resonance spectra
2002 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 66, no 10, 104419-1-104419-5 p.Article in journal (Refereed) Published
The shapes of ferromagnetic resonance (FMR) spectra of laser deposited epitaxial Y3Fe5O12 (YIG) films strongly depend on the orientation of the magnetic field with respect to the crystalline axes of the film. Strain and compositional inhomogeneties in the films define local magnetic anisotropies and could be responsible for the complexity of FMR spectra. We show that, in accordance with the Smit-Suhl formula, the contribution from a spatial distribution of the cubic magnetocrystalline anisotropy to the FMR spectra vanishes at certain orientations ("critical angles") of the magnetic field. We prove experimentally that it is a necessary condition to orient the magnetic field at the critical angles in order to measure single-line FMR spectra in an inhomogenous laser deposited YIG film.
Place, publisher, year, edition, pages
2002. Vol. 66, no 10, 104419-1-104419-5 p.
YTTRIUM-IRON-GARNET, LASER ABLATION, FILMS, DEPOSITION, MICROWAVE
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-6466DOI: 10.1103/PhysRevB.66.104419ISI: 000178460900058OAI: oai:DiVA.org:kth-6466DiVA: diva2:11187
QC 201111212004-11-122004-11-122011-11-21Bibliographically approved