Premium
Temperature Dependent Dielectric Behaviour of Nanocrystalline Co 0.5 Mg 0.5 Cr 0.4 Fe 1.6 O 4 Ferrite
Author(s) -
Jadoun Priya,
Jyoti X.,
Dolia S. N.,
Bhatnagar Deepak,
Saxena V. K.
Publication year - 2017
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201700004
Subject(s) - dielectric , nanocrystalline material , materials science , dissipation factor , ferrite (magnet) , spinel , crystallite , analytical chemistry (journal) , dielectric loss , conductivity , permittivity , atmospheric temperature range , lattice constant , chromium , diffraction , condensed matter physics , mineralogy , nuclear magnetic resonance , thermodynamics , chemistry , optics , metallurgy , composite material , physics , optoelectronics , chromatography , nanotechnology
Chromium substituted Co‐Mg ferrite with composition Co 0.5 Mg 0.5 Cr 0.4 Fe 1.6 O 4 has been synthesized by solgel auto combustion method. X‐ray diffraction technique confirmed the formation of cubic spinel structure with no additional phase. In order to distinguish the effect of crystallite size‐ induced broadening and strain‐ induced broadening of XRD peaks, Williamson and Hall analysis has been performed. Dielectric constant, dielectric loss tangent and ac conductivity have been measured in the frequency range 50 kHz–120 MHz at room temperature. The decrease in dielectric constant with increasing frequency is attributed to Maxwell Wagner model. The variation of dielectric constant and loss tangent with temperature at different frequencies have also been studied.