Magnetic properties of rare-earth borides with composition R(FeCo)/sub 4/ B

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Appl. Phys. Commun.; (United States)

OSTI ID:6878557

Aly, S H; Hadjipanayis, G C

Rare-earth intermetallic compounds of the Co/sub 5/R type are known to have extremely large magnetocrystalline anisotropy. However no stable RFe/sub 5/ compounds are known to exist. Very recently pseudo 1:5 compounds of the form RTM/sub 4/B with TM:Co,Fe have been reported to crystalline in a hexagonal structure derived from the CaCu/sub 5/ structure and to have in certain cases outstanding hard magnetic properties. In this study the authors investigate the magnetic properties of bulk and powder materials of the compositions RCo/sub 4/B and RCo/sub 4-x/Fe/sub x/B with x=0-3 and R: Sm, Nd and Pr and RFe/sub 4/B compounds with R: Er and Tb in the temperature range of 4.2-300 K. Preliminary data show that the coercivity of the as-cast samples ranges from 0.1-0.8 kOe at 300 K and from 0.2-8 kOe at 4.2K with the highest coercivity observed in SmCo/sub 4/B. The saturation magnetization, coercive fields and Curie temperatures of these compounds will be reported and discussed.

• Research Organization: Kansas State Univ., Manhattan
• OSTI ID: 6878557
• Report Number(s): CONF-8511278-
• Journal Information: Appl. Phys. Commun.; (United States), Journal Name: Appl. Phys. Commun.; (United States) Vol. 6:1; ISSN APCOD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
BORIDES
BORON COMPOUNDS
COBALT COMPLEXES
COERCIVE FORCE
COMPLEXES
CURIE POINT
DATA
ERBIUM COMPOUNDS
EXPERIMENTAL DATA
INFORMATION
IRON COMPLEXES
MAGNETIC PROPERTIES
NEODYMIUM COMPOUNDS
NUMERICAL DATA
PHYSICAL PROPERTIES
POWDERS
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
TEMPERATURE DEPENDENCE
TERBIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPLEXES
TRANSITION TEMPERATURE