Ferromagnetic enhancement in the hexagonal Ce(Rh/sub 1-//sub x/Ir/sub x/)/sub 3/B/sub 2/ system

Journal Article · Mon Aug 01 00:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.2944· OSTI ID:6866054

Hsu, S W; Ku, H C

Electrical resistivity, magnetization, and crystallographic measurements have been carried out for the pseudoternary system Ce(Rh/sub 1-//sub x/Ir/sub x/)/sub 3/B/sub 2/. A single-phase hexagonal CeCo/sub 3/B/sub 2/-type structure persists from x = 0.0 up to x<0.75, through a narrow two-phase region at higher iridium concentration, and transforms to a monoclinic ErIr/sub 3/B/sub 2/-type structure for x>0.95. The ferromagnetic Curie temperature T/sub c/ is enhanced from 115 K for CeRh/sub 3/B/sub 2/ to 125 K for Ce(Rh/sub 0.8/Ir/sub 0.2/)/sub 32/, then decreases slowly to 118 K at x = 0.5 before decreasing sharply to 69 K at x = 0.67, even though the magnetic moment per Ce ion decreases monotonically with increasing Ir substitution. The T/sub c/ of 125 K in Ce(Rh/sub 0.8/Ir/sub 0.2/)/sub 3/B/sub 2/ is the highest magnetic-ordering temperature observed so far for all Ce-based systems with nonmagnetic constituents.

• Research Organization: Department of Physics, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
• OSTI ID: 6866054
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 38:4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM BORIDES
ELECTRIC CONDUCTIVITY
FERROMAGNETISM
IRIDIUM BORIDES
RHODIUM BORIDES
CURIE POINT
IMPURITIES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MEDIUM TEMPERATURE
TEMPERATURE DEPENDENCE
TERNARY ALLOY SYSTEMS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
ALLOY SYSTEMS
BORIDES
BORON COMPOUNDS
CERIUM COMPOUNDS
ELECTRICAL PROPERTIES
MAGNETISM
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
RHODIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
360204* - Ceramics
Cermets
&amp; Refractories- Physical Properties