Optical Properties and Potential Applications of Nanoferrites

Abstract

Copyright: © 2017 Goswami N, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The real challenge of researchers of nanotechnology lies in fabrication of nanometre-scale particles and their controlled interaction with each other and with surroundings. Nanoferrites are found to showcase superior and substantially distinct electrical and magnetic properties. Historically, the industrial usage of magnetic and electrical materials was based mainly on iron and its alloys [1]. But the conventional methods of minimising losses due to eddy current could no longer be utilized competently and economically at high frequency operations [1]. This limitation stimulated interest in “magnetic Insulators” which were first testified by Hilpert in 1909 [1]. The researchers combined metal oxides having high value of electrical resistivity with preferred magnetic features to devise magnetic material, suitable for high frequency applications. The generic molecular formula of ferrites is presented as MOFe2O3 whereas, chemical formula is typically given as MFe2O4, where M represents the divalent metal ions like Cu2+, Fe2+, Ni2+, Co2+, Zn2+, Mn2+, Mg2+ etc. [2]. Magnetically recyclable ZnFe2O4/ZnO nanocomposites, immobilized on different contents of graphene, validate favourable photo-catalytic activity under solar light irradiation [3].