Procedding 2019-CHAPTER ONENational Conference on Research & Innovations – NewSub ProceedingRural Telecom and Marketing Network in IndiaPreparation of Spinel Nanoferrites (MFe2O4: M= Li, Ni, Zn, Mn) by Chemical Sol Gel Method with High Energy Ball Milling and CharacterizationsImproved Properties of Microwave Sintered Li-Ni-Co ferrites