Title :
Crystallization behaviour and magnetic properties of melt-spun Pr/sub x/(Fe/sub 0.8/Co/sub 0.2/)/sub 94-x/B/sub 6/ alloys
Author :
Wang, Z.C. ; Davies, H.A. ; Harland, C.L.
Author_Institution :
Dept. of Eng. Mater., Univ. of Sheffield, UK
Abstract :
Summary form only given. Nanophase melt spun PrFeB alloys, having exchange enhanced remanence J/sub r/ and energy product (BH)/sub max/, have the advantage of higher coercivities than corresponding NdFeB alloys because of the higher magnetocrystalline anisotropy constant for the Pr/sub 2/Fe/sub 14/B phase than for its Nd counterpart. The Curie temperature for Pr/sub 2/Fe/sub 14/B is, however, somewhat lower than for Nd/sub 2/Fe/sub 14/B. Thus, partial substitution of Fe by Co is useful to compensate for this. The influence of Pr content and crystallization sequence on the magnetic properties of initially amorphous melt spun Pr/sub x/(Fe/sub 0.8/Co/sub 0.2/)/sub 94-x/B/sub 6/ (x=12, 10, 9, 8) alloy ribbons has been systematically investigated using DTA, XRD, TEM and VSM techniques.
Keywords :
Curie temperature; X-ray diffraction; boron alloys; cobalt alloys; coercive force; crystallisation; differential thermal analysis; exchange interactions (electron); ferromagnetic materials; iron alloys; magnetic anisotropy; nanostructured materials; praseodymium alloys; remanence; transmission electron microscopy; Curie temperature; DTA; Pr/sub x/(Fe/sub 0.8/Co/sub 0.2/)/sub 94-x/B/sub 6/; TEM; VSM; XRD; crystallization behaviour; energy product; exchange enhanced remanence; higher coercivities; higher magnetocrystalline anisotropy constant; magnetic properties; melt-spun Pr/sub x/(Fe/sub 0.8/Co/sub 0.2/)/sub 94-x/B/sub 6/ alloys; nanophase; Amorphous magnetic materials; Anisotropic magnetoresistance; Coercive force; Crystallization; Iron alloys; Magnetic anisotropy; Magnetic properties; Neodymium; Perpendicular magnetic anisotropy; Remanence;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1000825
