Influence of CoFe2O4 particle size on the development of in-situ phases and magnetic properties of ex-situ combustion derived ferrite-BaTiO3 composite

IF 1.7 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Electroceramics Pub Date : 2024-06-12 DOI:10.1007/s10832-024-00352-2

Sreenivasulu Pachari, Swadesh K. Pratihar, Bibhuti B. Nayak

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Abstract

The evolved in-situ phases may tune the structural parameters and magnetic properties of the ferrite-BaTiO₃ based composite. Here, CoFe₂O₄ is prepared, and its particle size is modified by calcination temperature. Further, it investigates the influence of CoFe₂O₄ particle size on the development of in-situ phases in ferrite-BaTiO₃ based composite prepared via an ex-situ gel- combustion and studies its structural parameters as well as magnetic properties at different calcination temperatures. In-situ phases such as plate-like morphologies of barium hexaferrite and hexagonal barium titanate are evolved along with polyhedral barium titanate and cobalt ferrite in these composites, but the development of these in-situ phases is found to be dependent on the particle size of CoFe₂O₄ as well as calcination temperature of the composite powders. Structural parameters, crystallite size, particle size, weight% of phases, and M-H loop as a function of the calcination temperature of these composites have been studied in detail.

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CoFe2O4 粒径对原位燃烧衍生铁氧体-BaTiO3 复合材料的原位相发展和磁性能的影响

原位相的演化可调整铁氧体-BaTiO3 复合材料的结构参数和磁性能。本文制备了 CoFe2O4，并通过煅烧温度改变其粒度。此外，该研究还探讨了 CoFe2O4 粒径对通过原位凝胶燃烧法制备的铁氧体-BaTiO3 基复合材料中原位相发展的影响，并研究了其结构参数以及不同煅烧温度下的磁性能。在这些复合材料中，六价铁钡和六方钛酸钡的板状形态以及多面体钛酸钡和钴铁氧体等原位相逐渐形成，但这些原位相的形成与 CoFe2O4 的粒度以及复合粉末的煅烧温度有关。我们详细研究了这些复合材料的结构参数、晶粒大小、粒度、相的重量百分比以及 M-H 循环与煅烧温度的函数关系。

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来源期刊

Journal of Electroceramics 工程技术-材料科学：硅酸盐

CiteScore

2.80

自引率

5.90%

发文量

审稿时长

5.7 months

期刊介绍： While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including: -insulating to metallic and fast ion conductivity -piezo-, ferro-, and pyro-electricity -electro- and nonlinear optical properties -feromagnetism. When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice. The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.