The influence of the dielectric on the properties of dielectromagnetic soft magnetic composites. Investigations with silica and silica hybrid sol-gel derived model dielectric

Hdl Handle:
http://hdl.handle.net/10149/58327
Title:
The influence of the dielectric on the properties of dielectromagnetic soft magnetic composites. Investigations with silica and silica hybrid sol-gel derived model dielectric
Authors:
Pang, Y. X. (Yongxin); Hodgson, S. N. B. (Simon); Koniarek, J. (Jarosław); Weglinski, B. (Bogumil)
Affiliation:
University of Teesside. School of Science and Technology; Wroclaw Technical University. Institute of Electrical Machines, Drives, and Metrology. Poland.
Citation:
Pang, Y. X. et al. (2007) 'The influence of the dielectric on the properties of dielectromagnetic soft magnetic composites. Investigations with silica and silica hybrid sol-gel derived model dielectric', Journal of Magnetism and Magnetic Materials, 310 (1), pp.83-91.
Publisher:
Elsevier
Journal:
Journal of Magnetism and Magnetic Materials
Issue Date:
Mar-2007
URI:
http://hdl.handle.net/10149/58327
DOI:
10.1016/j.jmmm.2006.08.002
Abstract:
Dielectromagnetics made from organic–inorganic hybrid silica-coated iron powders were characterised by determination of their physical, mechanical and magnetic properties. The influence of three main factors, dielectric composition, addition level and heat treatment conditions were investigated. Results showed that these factors have significant effects on the performance of the dielectromagnetics. Increase in the organic phase content in these dielectric coatings tends to increase both the electrical resistivity and magnetic permeability of dielectromagnetics, although the strength and density are slightly impaired. Increasing the coating thickness leads to improvements in resistivity and thus reduced eddy current losses, but these are offset by reductions in density, strength and particularly magnetic permeability. A hybrid organic–inorganic coating formulation based on 40 mol% MTMS and 60 mol% TEOS precursors was found to be the optimum composition investigated. Addition levels between 0.1% and 0.3% were found to offer a good compromise between maximum permeability (μmax>400) and minimum loss (typically <8 W/kg) for operation at 50 Hz/1 T, and the system can be optimised within this range for the desired performance.
Type:
Article
Keywords:
soft magnetic composites; dielectromagnetics; sol–gel; hybrids; nanocomposite dielectric
ISSN:
0304-8853
Rights:
Author can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 14/01/2010]
Citation Count:
0 [Web of Science and Scopus, 14/01/2010]

Full metadata record

DC FieldValue Language
dc.contributor.authorPang, Y. X. (Yongxin)-
dc.contributor.authorHodgson, S. N. B. (Simon)-
dc.contributor.authorKoniarek, J. (Jarosław)-
dc.contributor.authorWeglinski, B. (Bogumil)-
dc.date.accessioned2009-04-01T10:49:08Z-
dc.date.available2009-04-01T10:49:08Z-
dc.date.issued2007-03-
dc.identifier.citationJournal of Magnetism and Magnetic Materials; 310 (1): 83-91-
dc.identifier.issn0304-8853-
dc.identifier.doi10.1016/j.jmmm.2006.08.002-
dc.identifier.urihttp://hdl.handle.net/10149/58327-
dc.description.abstractDielectromagnetics made from organic–inorganic hybrid silica-coated iron powders were characterised by determination of their physical, mechanical and magnetic properties. The influence of three main factors, dielectric composition, addition level and heat treatment conditions were investigated. Results showed that these factors have significant effects on the performance of the dielectromagnetics. Increase in the organic phase content in these dielectric coatings tends to increase both the electrical resistivity and magnetic permeability of dielectromagnetics, although the strength and density are slightly impaired. Increasing the coating thickness leads to improvements in resistivity and thus reduced eddy current losses, but these are offset by reductions in density, strength and particularly magnetic permeability. A hybrid organic–inorganic coating formulation based on 40 mol% MTMS and 60 mol% TEOS precursors was found to be the optimum composition investigated. Addition levels between 0.1% and 0.3% were found to offer a good compromise between maximum permeability (μmax>400) and minimum loss (typically <8 W/kg) for operation at 50 Hz/1 T, and the system can be optimised within this range for the desired performance.-
dc.publisherElsevier-
dc.rightsAuthor can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 14/01/2010]-
dc.subjectsoft magnetic composites-
dc.subjectdielectromagnetics-
dc.subjectsol–gel-
dc.subjecthybrids-
dc.subjectnanocomposite dielectric-
dc.titleThe influence of the dielectric on the properties of dielectromagnetic soft magnetic composites. Investigations with silica and silica hybrid sol-gel derived model dielectric-
dc.typeArticle-
dc.contributor.departmentUniversity of Teesside. School of Science and Technology; Wroclaw Technical University. Institute of Electrical Machines, Drives, and Metrology. Poland.-
dc.identifier.journalJournal of Magnetism and Magnetic Materials-
ref.assessmentRAE 2008-
ref.citationcount0 [Web of Science and Scopus, 14/01/2010]-
or.citation.harvardPang, Y. X. et al. (2007) 'The influence of the dielectric on the properties of dielectromagnetic soft magnetic composites. Investigations with silica and silica hybrid sol-gel derived model dielectric', Journal of Magnetism and Magnetic Materials, 310 (1), pp.83-91.-
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