Open AccessInfluence of Li2CO3 addition on electrical and magnetic properties of Ni0.6Mg0.4Fe2O4
Author(s) -
Mehwish Hassan,
M. T. Islam,
M. N. I. Khan
Publication year - 2020
Publication title -
journal of advanced dielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 13
eISSN - 2010-135X
pISSN - 2010-1368
DOI - 10.1142/s2010135x20500034
Subject(s) - materials science , coercivity , electrical resistivity and conductivity , analytical chemistry (journal) , impurity , ferrite (magnet) , saturation (graph theory) , dielectric , phase (matter) , hysteresis , condensed matter physics , magnetization , nuclear magnetic resonance , dielectric loss , diffraction , magnetic field , chemistry , physics , composite material , mathematics , optoelectronics , chromatography , quantum mechanics , combinatorics , optics , organic chemistry
In this research, influence of adding Li 2 CO 3 (at 0%, 2%, 4%, 6%) on electrical and magnetic properties of [Formula: see text][Formula: see text]Fe 2 O 4 (with 60% Ni and 40% Mg) ferrite has been studied. The samples are prepared by solid state reaction method and sintered at 1300 ∘ C for 6[Formula: see text]h. X-ray diffraction (XRD) patterns show the samples belong to single-phase cubic structure without any impurity phase. The magnetic properties (saturation magnetization and coercivity) of the samples have been investigated by VSM and found that the higher concentration of Li 2 CO 3 reduces the hysteresis loss. DC resistivity increases with Li 2 CO 3 contents whereas it decreases initially and then becomes constant at lower value with temperature which indicates that the studied samples are semiconductor. The dielectric dispersion occurs at a low-frequency regime and the loss peaks are formed in a higher frequency regime, which are due to the presence of resonance between applied frequency and hopping frequency of charge carriers. Notably, the loss peaks are shifted to the lower frequency with Li 2 CO 3 additions.