Ferrites obtained by sol-gel method

Abstract

Ferrites are ferrimagnetic materials, a broad class of magnetic oxides with its remarkable structural, electrical, and magnetic properties making them suitable for a variety of applications. These properties strongly depend upon the method of preparation. Sol-gel method is having countless advantages over other methods to obtain the ferrite with desired nanoarchitecture. In this chapter, the effects of varying synthesis conditions such as chelating agent/fuel to nitrate ratio, effect of pH, sintering time/temperature, etc., on the final product of ferrites are discussed. This chapter also focuses to synthesize the ferrite in the form of nanocrystalline powder, nanowires, nanotubes, nanoribbon, mesoporous material and thin film of spinel, hexaferrite, and perovskite-bismuth ferrite. Possible mechanisms that affect the structure formation and properties of ferrite along with their application in various technological fields are also discussed.