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Título

Structural and magnetic investigation of Co-rich Sm–Co unidirectionally solidified alloys

AutorPlugaru, N.; Rubín, Javier; Bartolomé, Juan
Palabras clavePermanent magnets
Crystal growth
Magentisation
Microstructure
Scanning electron microscopy
SEM
Fecha de publicación16-may-2007
EditorElsevier
CitaciónJournal of Alloys and Compounds 433(1-2): 129-139 (2007)
ResumenSm(Co, Fe, Cu, Zr)z alloys, with various degrees of crystallographic and magnetic texture, were synthesized by a route based on floating zone melting and unidirectional solidification. The phase composition, the microstructure and magnetisation curves of these materials were investigated by scanning electron microscopy, X-ray diffraction and magnetisation measurements. The trials undertaken by systematically varying the process parameters (heating power, floating zone velocity) allowed us to determine for each particular start composition the solidification regimes which yield materials with 1:5- and/or 2:17-type phases, free of Co metal precipitates, as well as with the crystallographic c-axis, easy magnetisation direction, respectively, oriented parallel or perpendicular to the temperature gradient main direction. The effect of solutionizing and ageing treatments on the microstructure and magnetic properties of the textured alloys was also investigated.
Descripción11 figures, 4 tables.
Versión del editorhttp://dx.doi.org/10.1016/j.jallcom.2006.06.038
URIhttp://hdl.handle.net/10261/19238
DOI10.1016/j.jallcom.2006.06.038
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