In 1950s, after the discovery of hexagonal ferrites called as hexaferrites, there has been an increasing level curiosity in hexaferrites and still, it is exponentially. Commercially technologically, belong to a category important magnetic materials due their utilization various applications such permanent magnets, recording media, storage devices, rod antennas, high frequency microwave devices ...

Iron-based hexaferrites are critical-element-free permanent magnet components of magnetic devices. Of particular interest is electron-doped M-type hexaferrite i.e., ${\mathrm{LaFe}}_{12}{\mathrm{O}}_{19}$ (LaM) in which extra electrons introduced by lanthanum substitution barium/strontium play a key role uplifting the magnetocrystalline anisotropy. We investigate electronic structure using dens...

A simple structured tunable negative refractive index (n) metamaterial (TNIM) has been designed, fabricated and tested in a Q-band rectangular waveguide. The structure consists of one slab of single crystalline scandium-doped barium hexaferrite (Sc-BaM), aligned parallel to two rows of periodic copper wires. The magnetic field tunable passband is measured indicating the occurrence of negative n...

Abstract—Miniaturized ferrite ring patch antennas (RPAs) were designed and fabricated for multiple-input multiple-out (MIMO) applications. Design parameters of higher-order mode ferrite RPAs, 1-RPA and 2-RPA, were optimized, and antenna performance of the ferrite 1-RPA was evaluated. The Z-type hexaferrite and 2%-weight borosilicate glass composite was used for the ferrite antenna disk. The mea...