Title: Synthesis and microstructure of gallium substituted cobalt ferrite nanoparticles by hydrothermal method

Authors: Gayathri Sivaraman; S. Kalainathan

Addresses: Center for Crystal Growth, VIT University, Vellore 14, Tamil Nadu, India ' Center for Crystal Growth, VIT University, Vellore 14, Tamil Nadu, India

Abstract: Magnetic CoFe2-xGaxO4 nanoparticles were successfully synthesised via hydrothermal method. The samples were characterised by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM). The experimental results showed that the CoFe2-xGaxO4 were composed of single phase spinel structure and the average crystallite size is between 42 and 57 nm. The saturation magnetisation (Ms) of the CoFe2-xGaxO4 nanoparticles decreased linearly as the contents of Ga increased for x = 0.2-0.8 which can be used in sensor applications.

Keywords: magnetic nanoparticles; hydrothermal method; field emission SEM; scanning electron microscopy; FESEM; HRTEM; VSM magnetic studies; synthesis; microstructure; gallium; cobalt ferrite nanoparticles; saturation magnetisation; sensors.

DOI: 10.1504/IJNP.2016.078500

International Journal of Nanoparticles, 2016 Vol.9 No.1, pp.11 - 18

Available online: 17 Aug 2016 *

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