Influence of Cr3 substitution on the electrical and magnetic properties of Ni0.4Cu0.4Zn0.2Fe2O4 nanoparticlesReportar como inadecuado




Influence of Cr3 substitution on the electrical and magnetic properties of Ni0.4Cu0.4Zn0.2Fe2O4 nanoparticles - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

International Nano Letters

, 2:28

First Online: 24 October 2012Received: 03 April 2012Accepted: 10 October 2012

Abstract

The Ni0.4Cu0.2Zn0.4 ferrites with different concentrations of Cr were synthesized at a low temperature 450°C using sol–gel auto-combustion method. The X-ray diffraction analysis of the samples confirms the formation of a single-phase cubic spinel structure. The lattice constant decreases from 8.331 to 8.253 Å with an increase in Cr substitution. Bulk density decreases from 4.95 to 4.71 gm-cm whereas porosity increases from 9.34% to 14.76% with an increase in Cr substitution. Transmission electron microscopy was adopted to determine the particle size. Particle size decreases from 19 to 13 nm with the addition of Cr ions. Saturation magnetization, coercivity, and other hysteresis parameters were measured using a vibrating sample magnetometer at room temperature with a maximum magnetic field of 8 kOe. Magnetization decreases from 62 to 48 emu-g, whereas coercivity increases from 65 to 180 Oe. The direct current DC resistivity increases from 3.62 × 10 to 4.21 × 10 Ω cm with Cr content x. The dielectric constant ε decreases with increasing concentration of Cr ions.

KeywordsFerrite nanoparticles Electrical properties Magnetic properties Electronic supplementary materialThe online version of this article doi:10.1186-2228-5326-2-28 contains supplementary material, which is available to authorized users.

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Autor: Ramkrishna H Kadam - Asif Karim - Ankush B Kadam - Anil S Gaikwad - Sagar E Shirsath

Fuente: https://link.springer.com/







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