Published November 2010 | Version v1
Journal article Metadata-only

Magnetic microstructures of a high coercivity Nd-Fe-B sintered magnet in remanent and incomplete thermal demagnetization states

Creators

  • 1. Division of Functional Materials Research, Central Iron and Steel Research Institute, Beijing 100081 (China)
  • 2. School of Material Sciences and Engineering, Harbin Institute of Technology, Harbin 150001 (China)
  • 3. State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190 (China)

Description

Magnetic microstructures of a high coercivity Nd-Fe-B sintered magnet in remanent and incomplete thermal demagnetization states have been revealed by using magnetic force microscopy (MFM) with high coercivity tips. MFM results indicate that specimens in a remanent state are single domain and their magnetizations align with the direction of the magnetizing field. The evolution of the magnetic domains with annealing temperatures shows that the thermal demagnetization process consists of four stages. Nd-Fe-B should be heat-treated at about 120-170 oC to make its magnetic state stable before practical applications.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jmmm.2010.07.036

Additional details

Identifiers

DOI
10.1016/j.jmmm.2010.07.036;
PII
S0304-8853(10)00500-7;

Publishing Information

Journal Title
Journal of Magnetism and Magnetic Materials
Journal Volume
322
Journal Issue
22
Journal Page Range
p. 3720-3723
ISSN
0304-8853
CODEN
JMMMDC

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42048956
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANNEALING; ATOMIC FORCE MICROSCOPY; BORON ALLOYS; COERCIVE FORCE; DEMAGNETIZATION; IRON ALLOYS; MAGNETIC FIELDS; MAGNETIZATION; MAGNETS; MICROSTRUCTURE; NEODYMIUM ALLOYS; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K
Descriptors DEC
ALLOYS; EQUIPMENT; HEAT TREATMENTS; MICROSCOPY; RARE EARTH ALLOYS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS

Optional Information

Copyright
Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.