The hard ferrites called hexaferrites or hexagonal show excellent characteristics which makes them suitable for many potential applications. magnetic of these must be tweaked to meet the needs a certain application. This can fulfilled by making few modifications within crystal structure such as reduction size at nanoscale, changes in morphology, substitution divalent well trivalent metal cation...

synthesis of bafe12o19 magnetic nano particles via precipitation in different ph conditions have been reported. the certain molar ratio of fe/ba = 12 selected and sodium hydroxide was used as a precipitant agent. x-ray diffraction (xrd), scanning electron microscopy (sem) and vibrating sample magnetometer (vsm) were used to consider the structural, morphological and magnetic properties of bariu...

Advances in wireless communication place an increasing number of demands on antenna performance, necessitating the presence various capabilities a single device. Reconfigurable antennas are frequently utilized to meet these application within restricted area. The purpose this book chapter is summarize general introduction about hard ferrites, different synthesis methods ferrite for and altering...

Ferrites are the important material for memory devices. In this we discuss ferrites in detail with their classification, preparation method to applications. We also present a brief introduction about hard and application materials that offer distinct electrical magnetic features helpful various It is noted spin transmission torques may change magnetization through current travelling tunnel inte...

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 ...

When highly divided spinel fenites become reactive enough with oxygen, to allow the oxidation of the Fe ions at low temperature and of substitute cations too, when these cations are capable of different valence states. We prepared fine particles of spinel ferrites substituted by Mn, Mo, Cu, by "chimie douce", especially from oxalate precursors and used them to reveal and to study the oxido-redu...

The optical properties of multi-functionalized cobalt ferrite (CoFe2O4), cobalt zinc ferrite (Co0.5Zn0.5Fe2O4), and zinc ferrite (ZnFe2O4) nanoparticles have been enhanced by coating them with silica shell using a modified Stöber method. The ferrites nanoparticles were prepared by a modified citrate gel technique. These core/shell ferrites nanoparticles have been fired at temperatures: 400°C, 6...

Ferrites with spinel structure are the most widespread materials in radio engineering, electronics and communication industry, microwave devices and computer facilities. The change of synthesis temperature of ferrites results in cation redistribution of iron, which updates crystal properties, as macroscopic magnetic properties of ferrites. Among this extensive class of compounds nickel and copp...