Synthesis, magnetic properties and microstructure of Ni–Zn ferrite by sol–gel technique

Zahi, Souilah and Hashim, Mansor and Daud, Abdul Razak (2007) Synthesis, magnetic properties and microstructure of Ni–Zn ferrite by sol–gel technique. Journal of Magnetism and Magnetic Materials, 308 (2). pp. 177-182. ISSN 0304-8853

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In the study, the Ni–Zn ferrite powder of a Ni0.3Zn0.7Fe2O4 composition was synthesized by sol–gel route using metal acetates at low temperatures. Both the scanning electron microscope and X-ray diffraction analyses of various gel samples heated at different temperatures were used to identify the reaction stages where the amorphous-gel-to-crystalline phase transition occurred. The electrical, magnetic and microstructural properties of the toroidal cores were studied. It was found that the initial permeability increased with a large frequency band (0.1–31.39 MHz) and the magnetic loss was small. The electrical resistivity was higher as compared to the ones which were obtained by the conventional process. Therefore, well–defined polycrystalline microstructure nickel–zinc ferrite and a short processing time of gel preparation have become the major achievements of this study.

Item Type:Article
Keyword:Sol–gel preparation, Magnetic properties, Acetic acid, Microstructure, Sintering
Subject:Magnetic materials
Subject:Acetic acid
Faculty or Institute:Faculty of Engineering
ID Code:12501
Deposited By: Erni Suraya Abdul Aziz
Deposited On:25 May 2011 02:36
Last Modified:25 May 2011 02:38

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