Sr1.5Ba0.5Zn2Fe12O22 Hexaferrites Ferromagnetic Resonance and Nonlinear Excitation for Magneto-Electric Devices
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A magneto electric (ME) effect was reported [1] for the insulator material of helimagnetic hexaferrite of Sr1.5Ba0.5Zn2Fe12O22. In this study we are interested in investigating this materials ferromagnetic resonance to define its internal anisotropy fields. By using a vibrating sample magnetometer (VSM) and ferromagnetic resonance (FMR) analysis we realized that this helical hexaferrite has about -0.5 kOe exchange anisotropy field of HE. Also, by using an alternative free energy model we derived this materials Polder tensor and its ferromagnetic resonance condition. Meanwhile, we were able to show a potential magneto electric coupling by nonlinear excitation of planar helical hexaferrite, in which a magnetic nonlinear excitation is integrated into dielectric permittivity.
Index Terms, Ferrites, ferromagnetic resonances, and magnetic nonlinear excitations.
4 pages
4 pages