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

中国物理B ›› 2019, Vol. 28 ›› Issue (2): 26101-026101.doi: 10.1088/1674-1056/28/2/026101

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

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

Nandeibam Nilima, M Maisnam, Sumitra Phanjoubam

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

收稿日期:2018-11-19 修回日期:2018-12-05 出版日期:2019-02-05 发布日期:2019-02-05
通讯作者: M Maisnam E-mail:m_maisnam@yahoo.co.in

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

Received:2018-11-19 Revised:2018-12-05 Online:2019-02-05 Published:2019-02-05
Contact: M Maisnam E-mail:m_maisnam@yahoo.co.in

摘要/Abstract

摘要： 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.

关键词: lithium ferrites, sol-gel chemistry, magnetic properties, x-ray diffraction

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.

Key words: lithium ferrites, sol-gel chemistry, magnetic properties, x-ray diffraction

中图分类号: (X-ray diffraction)

61.05.cp

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)

Nandeibam Nilima, M Maisnam, Sumitra Phanjoubam. Enhanced structural and magnetic properties of microwave sintered Li-Ni-Co ferrites prepared by sol-gel method[J]. 中国物理B, 2019, 28(2): 26101-026101.

Nandeibam Nilima, M Maisnam, Sumitra Phanjoubam. Enhanced structural and magnetic properties of microwave sintered Li-Ni-Co ferrites prepared by sol-gel method[J]. Chin. Phys. B, 2019, 28(2): 26101-026101.

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

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

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