Tailoring magnetic properties of self-biased hexaferrites using an alternative copolymer of isobutylene and maleic anhydride

Chuanjian Wu; Zhong Yu; Alexander S. Sokolov; Chengju Yu; Ke Sun; Xiaona Jiang; Zhongwen Lan; Vincent G. Harris

doi:10.1063/1.5007709

AIP Advances (May 2018)

Tailoring magnetic properties of self-biased hexaferrites using an alternative copolymer of isobutylene and maleic anhydride

Chuanjian Wu,
Zhong Yu,
Alexander S. Sokolov,
Chengju Yu,
Ke Sun,
Xiaona Jiang,
Zhongwen Lan,
Vincent G. Harris

Affiliations

Chuanjian Wu: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Zhong Yu: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Alexander S. Sokolov: Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA
Chengju Yu: Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA
Ke Sun: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Xiaona Jiang: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Zhongwen Lan: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Vincent G. Harris: Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA

DOI: https://doi.org/10.1063/1.5007709
Journal volume & issue: Vol. 8, no. 5
pp. 056221 – 056221-6

Abstract

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Discussed is a novel self-biased hexaferrite gelling system based on a nontoxic and water-soluble copolymer of isobutylene and maleic anhydride. This copolymer simultaneously acts as a dispersant and gelling agent, and recently received much attention from the ceramics community. Herein its effects on the rheological conditions throughout magnetic-field pressing, and consequently, orientation, density and magnetic properties of textured hexaferrites were investigated. Ka-band FMR linewidths were measured, and the crystalline anisotropy and porosity induced linewidth broadening were estimated according to Schlömann’s theory. The copolymer allowed to reduce the friction between micron-sized magnetic particulates, resulting in higher density and degree of crystalline orientation, and lower FMR linewidth.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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