Published August 16, 1989 | Version v1
Journal article Metadata-only

Correlation between microstructure and magnetic properties in FeNdB permanent magnets doped with Al2O3

Creators

  • 1. Max-Planck-Institut fuer Metallforschung, Stuttgart (Germany, F.R.). Inst. fuer Physik

Description

Two-phase sintered magnets composed of the hard magnetic Fe14Nd2B and a Nd-rich nonmagnetic phase are produced doping the master alloy of Fe73.5Nd20B6.5 with 1.48 mass% Al2O3. Measuring the temperature dependence of the coercive field in these sintered magnets the effect of the microstructure on the coercive field can be quantitatively analyzed. In particular it can be shown that with increasing grain size the demagnetization effects originating from local stray fields increase whereas the surface quality of the grains is improved. (author)

Additional details

Publishing Information

Journal Title
Physica Status Solidi A
Journal Volume
114
Journal Issue
2
Series
Phys. Status Solidi A.
Journal Page Range
685-691
ISSN
0031-8965
CODEN
PSSAB

INIS

Country of Publication
Germany
Country of Input or Organization
German Democratic Republic
INIS RN
21039388
Subject category
S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM OXIDES; COERCIVE FORCE; DEMAGNETIZATION; DOPED MATERIALS; GRAIN SIZE; IRON BASE ALLOYS; IRON BORIDES; MAGNETIC PROPERTIES; MICROSTRUCTURE; NEODYMIUM ALLOYS; PERMANENT MAGNETS; SINTERED MATERIALS; TEMPERATURE DEPENDENCE; TIME DEPENDENCE
Descriptors DEC
ALLOYS; ALUMINIUM COMPOUNDS; BORIDES; BORON COMPOUNDS; CHALCOGENIDES; CRYSTAL STRUCTURE; EQUIPMENT; IRON ALLOYS; IRON COMPOUNDS; MAGNETS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH ALLOYS; SIZE; TRANSITION ELEMENT COMPOUNDS