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Chin. Phys. B, 2019, Vol. 28(2): 026101    DOI: 10.1088/1674-1056/28/2/026101
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

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

Nandeibam Nilima1, M Maisnam2, Sumitra Phanjoubam3
1 Department of Physics, Oriental College, Takyel, Imphal-795001, India;
2 Department of Physics, NIT Manipur, Langol, Imphal-795004, India;
3 Department of Physics, Manipur University, Canchipur, Imphal-795003, India
Abstract  The properties of lithium ferrites are very sensitive to chemical composition, synthesis method, and sintering techniques. Li-Ni-Co ferrites with compositional formula Li0.45-0.5xNi0.1CoxFe2.45-0.5xO4, 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      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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