Magnetic properties of nanocomposite and materials with an excess of Fe

Autor:	S J Collocott, P B Gwan, M. Jurczyk, J B Dunlop
Rok vydání:	1996
Předmět:	Nanocomposite Materials science Acoustics and Ultrasonics Annealing (metallurgy) Metallurgy Analytical chemistry Coercivity Condensed Matter Physics Hot pressing Surfaces Coatings and Films Electronic Optical and Magnetic Materials Magnetization Remanence Magnetic mineralogy Volume fraction
Zdroj:	Journal of Physics D: Applied Physics. 29:2284-2289
ISSN:	1361-6463 0022-3727
DOI:	10.1088/0022-3727/29/9/009
Popis:	Two-phase nanocomposite materials have been prepared by high-energy ball-milling (HEBM) (2:14:1 phase) (u = 0, 0.75, 1.5 or 3.0; y = 0 or 11.6 and z = 0 or 0.5) or (1:12 phase), with excess Fe and then annealing. Magnetic properties of materials containing volume fractions of up to 75% of a magnetically soft Fe phase have been investigated and remanence enhancement observed. Optimum magnetic properties are obtained for materials with a volume fraction of a magnetically soft phase of 37 - 40%; for -Fe powders a remanent magnetic polarization of 1.05 T and intrinsic coercivity of ; and for -Fe powders a remanent magnetic polarization of 0.85 T and intrinsic coercivity of . For Co-containing alloys, evidence was observed for the redistribution of Co in the HEBM process, resulting in a magnetically soft Fe(Co) phase. The magnetic properties of isotropic -Fe and -Fe type magnets, compacted by hot pressing, are reported.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::06a303ee5046f82f848013c067e4e999 https://doi.org/10.1088/0022-3727/29/9/009 Zobrazit plný text záznamu