Effect of zinc substitution on the nanocobalt ferrite powders for nanoelectronic devices

Jnaneshwara, DM and Avadhani, DN and Prasad, Daruka B and Nagabhushana, BM and Nagabhushana, H and Sharma, SC and Prashantha, SC and Shivakumara, C (2014) Effect of zinc substitution on the nanocobalt ferrite powders for nanoelectronic devices. In: JOURNAL OF ALLOYS AND COMPOUNDS, 587 . pp. 50-58.

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Abstract

Zinc substituted cobalt ferrite powders {Co(1-x)ZnxFe2O4} (0.0 <= x <= 0.5) were prepared by the solution combustion method. The structural, morphological, magnetic and electrical properties of as synthesized samples were studied. Powder X-ray diffraction patterns reveals single phase, cubic spinel structure with space group No. Fd (3) over barm (227). As zinc concentration increases, the lattice constant increases and the crystallite size decreases. The minimum crystallite size of similar to 12 nm was observed for x = 0.5 composition. The synthesized ferrite compounds show ferrimagnetic behavior, with coercivity value of 10779 Oe (Hard ferrite) at 20 K and 1298 Oe (soft ferrite) at room temperature (RT). The maximum saturation magnetization recorded for the Co0.5Zn0.5Fe2O4 composition was 99.78 emu g(-1) and 63.83 emu g(-1) at 20 K and RT respectively. The dielectric parameters such as dielectric constant, loss tangent and AC conductivity were determined as a function of frequency at RT. The magnetic and dielectric properties of the samples illustrates that the materials were quite useful for the fabrication of nanoelectronic devices. (C) 2013 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF ALLOYS AND COMPOUNDS
Publisher:	ELSEVIER SCIENCE SA
Additional Information:	copyright for this article belongs to ELSEVIER SCIENCE SA,SWITZERLAND
Keywords:	Dielectric property; Magnetic property; AC conductivity; Anisotropy constant
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	07 Feb 2014 06:47
Last Modified:	07 Feb 2014 06:48
URI:	http://eprints.iisc.ac.in/id/eprint/48325

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