Singh, Virender Pratap and Kumar, Gagan and Kotnala, R. K. and Shah, Jyoti and Sharma, Sucheta and Daya, K. S. and Batoo, Khalid M. and Singh, M. (2015) Remarkable magnetization with ultra-low loss BaGdxFe12-xO19 nanohexaferrites for applications up to C-band. Journal of Magnetism and Magnetic Materials, 378. 478-484 . ISSN 0304-8853

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Abstract

Sol-gel synthesized BaGdxFe12-xO19, (x=0.0, 0.1, 0.2, 0.3) nanohexaferrites, have been explored for magnetic and microwave properties. X-ray diffraction studies revealed the hexagonal structure of the synthesized ferrites. The particle size was observed to be in the range 90-84 nm. The dc resistivity was found to be increasing with an increase in Gd3+ content and the variation of dc resistivity with temperature confirmed the semiconducting behavior of all nanohexaferrites. The observed values of saturation magnetization and coercivity, at room temperature, are 81.34 emu/g and 6020 Oe respectively which are very high as compared to the values ever reported till date. Additionally, we observed ultra low magnetic loss (0.004-0.01) and dielectric loss (0.004-0.06) over the GHz frequency region. The obtained results make these nanohexaferrites a competent material for antenna applications up to C-band.

Item Type:	Article
Uncontrolled Keywords:	Nanostructures Sol–gel process Electric, dielectricandmagnetic properties
Subjects:	Materials Science Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	06 Oct 2016 07:04
Last Modified:	06 Oct 2016 07:04
URI:	http://npl.csircentral.net/id/eprint/1970

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