Magnetic study of some nanoferrite materials

The Mössbauer spectra of nanoferrite materials such as Ni۰.۲۵Mn۰.۷۵Fe۲O۴, Co۰.۵Mn۰.۵Fe۲O۴ and Ni۰.۴Co۰.۶Fe۲O۴ have been reported and the above materials were prepared by sol-gel combustion method using metal nitrates as source material and Polyvinyl alcohol(PVA) as agglomeration reducing agent. As the structural, thermal and magnetic properties (VSM) of the above ferrites have been published already, hence, the present paper reports the Mössbauer studies of the nanoferrites. Based on the observed values of hyperfine parameter such as Isomer shift (IS), Quadrupole splitting (QS) and hyperfine field values, the distribution of ion and structure of the ferrites has been reported.  

کلیدواژه ها:

Nanoferrites ، Isomer shift ، Quadrupole shift ، Spinel structure