Singh, Rakesh Kumar and Shah, Jyoti and Kotnala, R. K. (2016) Magnetic and dielectric properties of rare earth substituted Ni0.5Zn0.5Fe1.95R0.05O4 (R = Pr, Sm and La) ferrite nanoparticles. Materials Science and Engineering: B, 210. pp. 64-69. ISSN 0921-5107

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Abstract

Ni0.5Zn0.5Fe1.95R0.05O4 nanoparticles (R = Pr, Sm and La) have been synthesized by citrate precursor method and annealed at 450 degrees C All the samples were found to be in single phase. The lattice constants and crystallite size decreases with rare earth substitution (25 nm, 23 nm, 11 nm and 9 nm) due to strain produced in spinet lattice. Saturation magnetization and coercivity of ferrite significantly decreases (50.69 emu/g, 32.17 emu/g. 30.21 emu/g and 34.65 emu/g respectively) with rare earth substitution. The substitution of large ionic radius rare earth ions in Ni0.5Zn0.5Fe2O4 results in distortion and induces a softening of magnetic exchange interaction. The dielectric measurements at higher frequency range (100 Hz - 1 MHz) shows that these substituted ferrites exhibits low dielectric loss, which is suitable for high frequency applications.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Uncontrolled Keywords:	Rare earth substituted nanoferrite Citrate precursor method Magnetic and dielectric study
Subjects:	Materials Science Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	30 Jan 2018 11:20
Last Modified:	30 Jan 2018 11:20
URI:	http://npl.csircentral.net/id/eprint/2272

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