High hard magnetic properties and cellular structure of nanocomposite magnet Nd4.5Fe73.8B18.5Cr0.5Co1.5Nb1Cu0.2
N.D. The
N. Chau
N.V. Vuong
N.H. Quyen
N. Chau
N.V. Vuong
N.H. Quyen
The formation of special nanostructure, cellular structure, in
Nd4.5Fe73.8B18.5Cr0.5Co1.5Nb1Cu0.2 nanocomposite magnet has been
observed by means of SEM for the first time. Ultrafine structure of
cellules with thickness of 20-25 nm and length in range of 200-300 nm
leads to high shape anisotropy of the materials. Therefore, high hard
magnetic properties were obtained with (BH)(max) up to 17.3 MG Oe in
ribbons with very high remanence of 13.5 kG. The role of Cr and Co in
the formation and refinement of cellular structure is proposed. Effect
of heat treatment on hard magnetic properties is discussed in detail.
Chi tiết xin mời tham khảo tại http://repository.vnu.edu.vn/handle/VNU_123/31661
Title: | High hard magnetic properties and cellular structure of nanocomposite magnet Nd4.5Fe73.8B18.5Cr0.5Co1.5Nb1Cu0.2 |
Authors: | N.D. The N. Chau N.V. Vuong N.H. Quyen |
Keywords: | Amorphous alloys;Nanocrystalline alloys;Exchange-spring magnets;Permanent magnets |
Issue Date: | 2006 |
Publisher: | ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
Citation: | ISIKNOWLEDGE |
Description: | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS Volume: 303 Issue: 2 Pages: E419-E422 Published: AUG 2006 ; TNS07696 |
URI: | http://repository.vnu.edu.vn/handle/VNU_123/31661 |
ISSN: | 0304-8853 |
Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
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