An original route for the preparation of hard FePt

Title:	An original route for the preparation of hard FePt
Authors:	N, H. Hai Dempsey, NM Veron, M
Keywords:	FePt magnets Cold rolling Nanostructured magnetic materials Bulk multilayers Micro-system magnets
Issue Date:	2003
Publisher:	ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Citation:	ISIKNOWLEDGE
Abstract:	The preparation of FePt hard magnetic foils by an original procedure is described in this paper. The process associates cyclic co-deformation of Fe and Pt foils down to the nanometer scale (total thickness of multilayerE100mm) followed by heat treatment in the temperature range 450–5501C. The formation of the high-anisotropy L10FePt phase results from controlled diffusion and an ordering phase transformation. Coercivities as high as 0.9T were measured in a VSM at room temperature following annealing at 4501C for 48h. The coercivity of this sample was decreased by half when measured at 600K while its energy product decreased from 100kJ/m 3 at 300K to 25kJ/m 3 at 600K.
Description:	TNS07872 ; JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS Volume: 257 Issue: 2-3 Pages: L139-L145
URI:	http://repository.vnu.edu.vn/handle/VNU_123/31851 http://www.sciencedirect.com/science/article/pii/S0304885302012842
ISSN:	0304-8853
Appears in Collections:	Bài báo của ĐHQGHN trong Web of Science