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

Journal Article · Wed Jan 01 00:00:00 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), Vol. 6:1; Conference: 33. annual Midwest solid state conference, Kansas City, MO, USA, 8 Nov 1985
• Country of Publication: United States
• Language: English

Related Subjects

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