Investigating Spin Seebeck Effect in various types of Hexaferrites

Abstract

Spintronics is an emerging field of physics which deals with the spin degree of freedom of electron. It has the potential to be applied in future devices. Various discoveries were made which contributed to the growth of the field. One such discovery is the Spin Seebeck Effect (SSE) in 2008. Since then, SSE has been observed in conductors, semiconductors and insulators. In case of insulators, most of the studies were based on a class of compounds called garnets. Through this project, we aim to investigate the hexaferrites PbM (PbFe12O19), BaM (BaFe12O19) and BaY (Ba2Zn2Fe12O22) as a potential spintronics material. These compounds were prepared via solid state synthesis route and various measurements were conducted on them including Resistivity, Dielectric and Spin Seebeck Effect measurements. Comparison was made amongst them to study the effect of changing the composition.