Magnetic and dielectric behavior of chromium substituted Co-Mg ferrite nanoparticles
- Department of Physics, University of Rajasthan, Jaipur 302004 (India)
The chromium doped Co-Mg ferrite with composition Co{sub 0.5}Mg{sub 0.5}Cr{sub 0.2}Fe{sub 1.8}O{sub 4} has been synthesized using sol-gel auto combustion method. The crystal structure has been analyzed by X-ray diffraction (XRD) technique. XRD pattern reveals the formation of single phase cubic spinel structure. The magnetic measurements show ferromagnetic behavior at room temperature and large coercivity is observed on cooling down the temperature to 20 K. Dielectric constant (ε’) and dielectric loss tangent (tan δ) have been determined at room temperature as a function of frequency in the frequency range 75 kHz to 80 MHz. The decrease in dielectric constant with increasing frequency attributes to Maxwell Wagner model and conduction mechanism in ferrites.
- OSTI ID:
- 22591391
- Journal Information:
- AIP Conference Proceedings, Vol. 1728, Issue 1; Conference: ICC 2015: International conference on condensed matter and applied physics, Bikaner (India), 30-31 Oct 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHROMIUM COMPOUNDS
COBALT COMPOUNDS
COERCIVE FORCE
COMBUSTION
CRYSTALS
DIELECTRIC MATERIALS
DOPED MATERIALS
FERRATES
FREQUENCY DEPENDENCE
KHZ RANGE
MAGNESIUM COMPOUNDS
MHZ RANGE
NANOPARTICLES
PERMITTIVITY
SOL-GEL PROCESS
TEMPERATURE RANGE 0273-0400 K
X-RAY DIFFRACTION