Kumar, Gagan and Shah, Jyoti and Kotnala, R. K. and Dhiman, Pooja and Rani, Ritu and Singh, Virender Pratap and Garg, Godawari and Shirsath, Sagar E. and Batoo, Khalid M. and Singh, M. (2014) Self-ignited synthesis of Mg-Gd-Mn nanoferrites and impact of cation distribution on the dielectric properties. Ceramics International, 40 (9). pp. 14509-14516. ISSN 0272-8842

PDF - Published Version Restricted to Registered users only Download (1499Kb) | Request a copy

Abstract

Mg0.9Mn0.1GdxFe2-xO4 nanoferrites were processed for the first time by a solution combustion technique. X-ray diffraction studies revealed the spinel cubic structure of the synthesized ferrites. The particle size was observed to increase (13-16 nm) with an increase in Gd3+ ion content The cation distribution is inferred from the X-ray diffraction. It is observed from cation distribution that Gd3+ ions preferred octahedral (B) sites. The DC resistivity was found to be increasing with an increase in Gd3+ content The dielectric constant epsilon' and loss tangent (tan delta) was observed to decrease with the addition of Gd3+ content as well as with the increase in frequency. The variations in DC resistivity as well as dielectric constant with the increasing substitution of Gd3+ ions have been correlated to the cation distribution. The very high values of DC resistivity (similar to 10(8) Omega cm) and low values of loss tangent (0.9-0.008) are the prime achievements of this work.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Uncontrolled Keywords:	Dielectricproperties Electricalproperties Cationdistribution Nanostructures X-raydiffraction
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	04 Nov 2015 10:48
Last Modified:	04 Nov 2015 10:48
URI:	http://npl.csircentral.net/id/eprint/1523

Actions (login required)

View Item