Study Of Structural And Dielectric Properties Of Ni-Mg Ferrite Nanoparticles

Journal Article · Wed Dec 01 04:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3530540· OSTI ID:21513123

Nongjai, Razia; Batoo, Khalid Mujasam; Khan, Shakeel ^[1]

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1. Dept. of Applied Physics, Aligarh Muslim University, Aligarh, 202002 (India) and King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, 11451 (Saudi Arabia)

Ferrite nanoparticles of basic composition Ni{sub 0.7}Mg{sub 0.3}Fe{sub 2-x}Al{sub x}O{sub 4}(0.0{<=}x{<=}0.5) were prepared through citrate gel method and characterized using XRD, TEM and dielectric spectroscopy techniques. The dielectric properties were studied as a function of frequency (42 Hz-5 MHz) at room temperature. The average particle size has been found between 8-17 nm. The dispersion in dielectric properties and ac conductivity ({sigma}{sub ac}), with frequency reveals that the dispersion is due to Maxwell-Wagner type of interfacial polarization in general and the hopping of charge between Fe{sup 2+} and Fe{sup 3+} as well as between Ni{sup 2+} and Ni{sup 3+} ions at B-sites. The dielectric loss tangent (tan {delta}) shows abnormal behavior for the compositions 0.3, 0.4 and 0.5 which has been explained in the light of Rezlescue model.

• OSTI ID: 21513123
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1313; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CARBOXYLIC ACID SALTS
CHARGED PARTICLES
CITRATES
COHERENT SCATTERING
DIELECTRIC PROPERTIES
DIFFRACTION
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
FERRIMAGNETIC MATERIALS
FERRITES
FREQUENCY DEPENDENCE
IONS
IRON COMPOUNDS
IRON IONS
MAGNESIUM COMPOUNDS
MAGNETIC MATERIALS
MATERIALS
MICROSCOPY
NANOSTRUCTURES
NICKEL COMPOUNDS
NICKEL IONS
OXYGEN COMPOUNDS
PARTICLE SIZE
PERMITTIVITY
PHYSICAL PROPERTIES
POLARIZATION
SCATTERING
SIZE
SPECTROSCOPY
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION