Hard magnetic properties of Nd-Co-B materials

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.341855· OSTI ID:6976602

Fuerst, C D; Herbst, J F

A systematic investigation of the magnetic properties of neodymium-cobalt-boron alloys rapidly solidified by melt spinning is reported. Room-temperature coercivities and energy products as large as 10.2 kOe and 5.2 MGOe, respectively, have been observed in ribbons comprised primarily of tetragonal Nd/sub 2/Co/sub 14/B. We find that the characteristics of optimum as-quenched samples can be essentially recovered by annealing partially amorphous ribbons melt spun at higher quench rates. Although the Curie temperature of Nd/sub 2/Co/sub 14/B is T/sub c/ approx. =995 K, the easy axis of magnetization changes from the c direction to the basal plane at T/sub s/ approx. =560 K, and the practical magnetic properties deteriorate as T/sub s/, rather than T/sub c/, is approached.

• Research Organization: Physics Department, General Motors Research Laboratories, Warren, Michigan 48090-9055
• OSTI ID: 6976602
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 64:3; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
BORIDES
BORON COMPOUNDS
CHEMICAL COMPOSITION
COBALT BORIDES
COBALT COMPOUNDS
FERROMAGNETIC MATERIALS
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETIZATION
MATERIALS
MEDIUM TEMPERATURE
NEODYMIUM BORIDES
NEODYMIUM COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS