Influence of Mo6+ on Dielectric properties of Copper Ferrites
Journal Title: Journal of Nuclear Physics, Material Sciences, Radiation and Applications - Year 2017, Vol 4, Issue 2
Abstract
Two series of copper ferrites are prepared using the chemical compositional formula Cu 1.0-3y Fe 2.0-2xMo x + yO4.0. They are calcinated at 750 C and sintered at 950C. When x =y = 0.0, the ε′ of the basic copper ferrite is probably due to electronic exchange interactions of copper and iron ions as Cu2+ ↔ Cu1+ and Fe3+ ↔ Fe2+. The observed value of dielectric constant (є′) decreases as a function of substituent concentration (x) up to x = 0.20 and for further values of ‘x’ it found to increase. In the case of ‘C’ (x = 0) series ferrites є′ decreases with substituent concentration (y) up to y = 0.04, later it found to increase. The dispersion of ac resistivity with frequency is observed indicating their strong dependence on frequency as in the case of dielectric behavior. These results are explained with different possible mechanisms.
Authors and Affiliations
B. V. Rao , P. V. L. Narayana , A. D. P. Rao
Keywords
Related Articles
- EP ID EP594984
- DOI 10.15415/jnp.2017.42027
- Views 248
- Downloads 0
ZnS (Mn) Nanoparticles as Luminescent Centers for Siloxane Based Scintillators
Synthesis of oleic acid stabilized ZnS nanocrystals activated with Mn is pursued. A hydrothermal method where high pressure and temperature are applied to control the nanocrystals growth is adopted. Capping the nanoparti...
Temperature Effects in the Composition of Metal Halide Perovskite thin Films
Metal halide perovskites have shown to be a structure with great promise as an efficient photovoltaic, but at the same time it is affected by instability problems that degrade their performance. Degradation mechanisms va...
Heavy-ion Fusion Cross Sections of 32S on 90,96Zr Targets Using Coulomb and Proximity Potential
The fusion excitation functions for the fusion of 32S on 90,96Zr have been calculated larger value, while using one-dimensional barrier penetration model, taking scattering potential as the sum of Coulomb and proximity p...
Sperm Hyperactivation and Capacitation Induced By Light Stimuli in Cryopreserved Semen
In mammals, such as rabbits, there are some factors involved in a possible fertilization, from complex changes in the membrane of the sperm to obstruction or non-existent of vas deferens, which creates problems in the nu...
Quantum Effects on the Linear Dispersion Characteristics in Electron-Positron Plasma
In electron-positron plasmas some of the plasma modes are decoupled due to the equal charge to mass ratio of both species. The dispersion properties of the propagation of linear waves in degenerate electron–positron magn...