Structural, magnetic and gas sensing properties of nanosized copper ferrite powder synthesized by sol gel combustion technique

[摘要] Stoichiometric nano sized copper ferrite particles were synthesized by sol gel combustion technique. They were then calcined at various temperatures ranging from 300-800 degrees C and were either furnace cooled or quenched in liquid nitrogen. A high magnetisation value of 48.2 emu/g signifying the cubic phase of copper ferrite, was obtained for sample quenched to liquid nitrogen temperature from 800 degrees C. The ethanol sensing response of the samples was studied and a maximum of 86% response was obtained for 500 ppm ethanol in the case of a furnace cooled sample calcined at 800 degrees C. The chemical sensing is seen to be correlated with the c/a ratio and is best in the case of tetragonal copper ferrite. (C) 2016 Elsevier B.V. All rights reserved.

[发布日期] 2016-11-15

[效力级别]  Proceedings Paper

[关键词] Magnetic materials;Nanostructures;Sol-gel combustion synthesis;X-ray diffraction;In-situ high temperature XRD;Chemical sensing