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Ferrites with hexagonal crystal symmetry have received much scientific and technological attention in their centimeter-/or even millimeter- (mm-) wave applications, since the hexagonal crystal symmetry leading to high magnetocrystalline anisotropy energies and subsequently high ferromagnetic resonance frequencies, among the most popular microwave hexaferrites are those derived from the M-type barium...
Magnetic vortices are characterized by the sense of in-plane magnetization circulation and by the polarity of the vortex core. Due to the combination of controlled chirality and polarity, magnetic vortices have attracted scientific interest for their potential application as multibit memory cells. However, to obtain the stable ground state, the confined geometries of the vortex structures define a...
High operation frequency and large absorbing bandwidth are often required for electromagnetic noise suppression [1]. Magnetic materials with strong anisotropy field (shape anisotropy or magnetocrystalline anisotropy), for instance FeCo nano plates [2], are needed to increase the operation frequency into the gigahertz (GHz) zone to solve the stringent problem of electromagnetic interference among the...
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