Tailoring magnetic properties of self-biased hexaferrites using an alternative copolymer of isobutylene and maleic anhydride
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Multiferroics and related materials · Electromagnetic wave absorption materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China 1 , Chengdu 610054, China
Department of Electrical and Computer Engineering, Northeastern University 2 , Boston, MA 02115, USA
Funding
National Natural Science Foundation of China
References (27)
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