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Ferrimagnetic Resonance Relations for Magnetocrystalline Anisotropy in Cubic Crystals

出版	Air Force Cambridge Research Laboratories, Office of Aerospace Research, United States Air Force, 1964
URL	http://books.google.com.hk/books?id=ajfoztKBny8C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋A general resonance equation which directly relates the resonance frequency to the static applied field and internal anisotropy field for cubic ferrimagnets was derived. The equation is valid for an infinite number of planes which contain the 110 direction. The limitations and difficulties of other approaches outlined in the literature are mentioned. The advantages and disadvantages of the derivation contained in this thesis are explained. Certain interesting features of the resonance relationship are mentioned. The theoretical calculations give very close agreement to the experimental observations on yttrium iron garnet (YIG), as well as gallium- and indium-substituted YIG's. The theoretical calculations, however, increasingly deviate from experimental results as the internal anisotropy fields increase. The validity of Wojtowicz's remarks concerning the inaccuracy, incompleteness, and confusion of the literature is investigated. (Author).