Microstructure and magnetic properties in Mn-doped Nd-Fe-B magnets
- 1. Department of Materials Science and Engineering, Hohai University, Nanjing 210098 (China)
- 2. Department of Mathematics and Physics, Hohai University, Nanjing 210098 (China)
- 3. National Laboratory of Solid State Microstructures, Physics Department of Nanjing University, Nanjing 210093 (China)
Description
The effect of the addition of antiferromagnetic element Mn on the local structure and the magnetic properties of Nd9Fe85B6 magnets has been studied. It was found that the microstructure and local structure heavily depended on both the Mn addition and the quenched speed. The Mn additions could promote the order degree around Fe atom in as-spun samples. After appropriate annealing, the completely crystallized samples were obtained. It showed that the difference of the local structures around Fe atoms almost disappeared and the hard magnetic properties, especially the coercivity was enhanced. It is presumed that the enhanced hard magnetic properties were attributed to the enhancement of the exchange coupling, which is between the hard phases and the soft phases
Additional details
Identifiers
- DOI
- 10.1016/j.materresbull.2006.05.003;
- PII
- S0025-5408(06)00201-7;
Publishing Information
- Journal Title
- Materials Research Bulletin
- Journal Volume
- 42
- Journal Issue
- 1
- Journal Page Range
- p. 131-136
- ISSN
- 0025-5408
- CODEN
- MRBUAC
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38063175
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANNEALING; ANTIFERROMAGNETISM; COERCIVE FORCE; COUPLING; DOPED MATERIALS; MAGNETIC PROPERTIES; MAGNETS; MICROSTRUCTURE; X-RAY DIFFRACTION
- Descriptors DEC
- COHERENT SCATTERING; DIFFRACTION; EQUIPMENT; HEAT TREATMENTS; MAGNETISM; MATERIALS; PHYSICAL PROPERTIES; SCATTERING
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.