Structural and Dielectric Properties of Manganese Ferrite Nanoparticles

Structural and Dielectric Properties of Manganese Ferrite Nanoparticles
Hashim Farooq, Muhammad Raza Ahmad, Yasir Jamil, Abdul Hafeez, Zeeshan Mahmood and Tahir Mahmood

http://dx.doi.org/10.6000/1927-5129.2012.08.02.53

Abstract: In this work, Manganese ferrite nanoparticles of various compositions were reproducibly synthesized via coprecipitation route. Variation in structural and dielectric properties was studied by varying the sintering temperature, sintering time and manganese to iron ratio. Structural, compositional and phase properties were investigated by X-ray diffraction (XRD) technique which confirmed the pure normal spinel structure with no other phase/impurity. Particle size, Lattice constant, measured bulk density, X-ray density, Specific Surface Area and Porosity were determined by the standard formulae. Responses of Capacitance and Dielectric constant were studied at room temperature in the frequency range of 600Hz to 1MHz by LCR meter which both showed the exponential decay at low frequency while both became nearly independent of frequency in higher frequency ranges.

Keywords: Nanoparticles, spinel structure, coprecipitation, dielectric constant.