Abstract
In the polycrystalline state, the interactions are more complicated and a specific spontaneous anisotropy was established there, called “total anisotropy”. The work deals with the domain-wall (DW) mobility due to magnetoelastic and high anisotropy interactions. The effects of the magnetoelasic stress anisotropy in the Mn:YIG and shape anisotropy in the Ba-hexaferrite on the complex magnetic permeability spectrum μ*(f) were investigated in a broad frequency range (0.3 ÷ 3 GHz). An attempt was made to adapt the “Domain-wall size” model to the explanation of domain wall dynamics in a weak high-frequency magnetic field. Some new data concerning the total anisotropy specifically for garnet and hexaferrite polycrystals were discussed and its value deduced from natural spin resonance measurements.
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© 1997 Springer Science+Business Media Dordrecht
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Nedkov, I. (1997). Domain-Wall Dynamics in Polycrystalline Garnet and Hexagonal Materials. In: Groll, H., Nedkov, I. (eds) Microwave Physics and Techniques. NATO ASI Series, vol 33. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5540-3_6
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DOI: https://doi.org/10.1007/978-94-011-5540-3_6
Publisher Name: Springer, Dordrecht
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