Enhanced structural and magnetic properties of microwave sintered Li-Ni-Co ferrites prepared by sol-gel method

doi:10.1088/1674-1056/28/2/026101

Abstract The properties of lithium ferrites are very sensitive to chemical composition, synthesis method, and sintering techniques. Li-Ni-Co ferrites with compositional formula Li_0.45-0.5xNi_0.1Co_xFe_2.45-0.5xO₄, where 0.00 ≤ x ≤ 0.1 in steps of 0.02 were prepared by chemical sol-gel method and sintered by microwave sintering technique. The x-ray diffraction patterns confirmed the formation of single phase with spinel structure in all the samples. The structural parameter viz. lattice constant, crystallite size, and x-ray density for these samples were studied and compared with those measured from samples of similar composition prepared by the sol-gel method and sintered by conventional sintering technique. Enhancement in the magnetic properties like Curie temperature, hysteresis parameters was observed by employing sol-gel synthesis combined with microwave sintering. The results obtained and mechanisms involved are discussed in the paper.

Keywords: lithium ferrites sol-gel chemistry magnetic properties x-ray diffraction

Received: 19 November 2018
Revised: 05 December 2018
Published: 05 February 2019

PACS:	61.05.cp	(X-ray diffraction)
	75.60.Ej	(Magnetization curves, hysteresis, Barkhausen and related effects)
	75.60.Ch	(Domain walls and domain structure)
	81.20.Fw	(Sol-gel processing, precipitation)

Corresponding Authors: M Maisnam
E-mail: m_maisnam@yahoo.co.in

Cite this article:

Nandeibam Nilima, M Maisnam, Sumitra Phanjoubam Enhanced structural and magnetic properties of microwave sintered Li-Ni-Co ferrites prepared by sol-gel method 2019 Chin. Phys. B 28 026101

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