NDLI: Role of <formula formulatype=inline> <tex Notation=TeX>${hbox{Bi}}_{2}{hbox{O}}_{3}$</tex></formula> Additives on the Microstructure Development and Magnetic Properties of NiCuZn-Tb Ferrites

Content Provider	IEEE Xplore Digital Library
Author	Shirsath, S.E. Patange, S.M. Yasukawa, Y. Xiaoxi Liu Morisako, A.
Copyright Year	1965
Abstract	The role of Bi₂O₃ addition on the structural and magnetic properties of NiCuZn-Tb ferrites with composition Ni_0.5Cu_0.25Zn_0.25Tb_0.1Fe_1.9O₄+xBi₂O₃ has been investigated, where values of x (in wt %) are 0, 1, 2 and 3. Samples were prepared by the sol-gel auto combustion synthesis. The crystallographic, structural and magnetic properties of the samples were investigated by X-ray diffraction (XRD), scanning electron micrography, vibrating sample magnetometer and permeability measurements. Cubic spinel structure was observed from the XRD pattern for all the samples, implying that the Bi₂O₃ additives did not form a visible second phase in ≤ 2 wt% of Bi₂O₃. Microstructural studies showed that Bi₂O₃ forms a liquid-like phase and promotes the grain growth. The average grain size increased for ≤ 2 and then decreased for > 2 wt% of Bi₂O₃ content. The maximal grain size appears with 2 wt% Bi₂O₃. These characteristics evidently affect the magnetic properties, such as saturation magnetization (Ms) and permeability of the NiCuZn-Tb ferrites. Bi₂O₃ increase the Ms, bulk density (d_B) and permeability effectively, while excessive Bi₂O₃ concentration results in the abnormal grain growth and decrease of Ms and d_B.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	4
Page Count	4
File Size	1883189
File Format	PDF
ISSN	00189464
Volume Number	50
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bismuth Ferrites Permeability Magnetic liquids Magnetic properties Microstructure Doping permeability ${\hbox{Bi}}_{2}{\hbox{O}}_{3}$ additives dielectric constant NiCuZn-Tb ferrite
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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