Evidence for spin fluctuations in the mixed valent superconductors Ce(Ru/sub 1-x/Os/sub x/)/sub 3/B/sub 2/
Conference
·
OSTI ID:6643113
Compounds containing cerium span a remarkably diverse range of electronic and magnetic properties. Among cerium based compounds are semiconductors, re-entrant superconductors, mixed valent and Kondo systems, superconducting and non-superconducting heavy fermion systems, and system exhibiting anomalous ferromagnetism. The hexagonal (P6/mmm) compound CeRu/sub 3/B/sub 2/ and the iso-electronic CeOs/sub 3/B/sub 2/ are known to be superconducting with transition temperatures of 1.1 K and 3.5 K, respectively. Bulk nature of the superconductivity in these compounds has been confirmed by specific heat measurements. Static susceptibility measurements indicate strong mixed valence of cerium in these compounds. In this paper we present data from an investigation of the variation of the superconducting transition temperature (T/sub c/) with Os concentration in the pseudoternary series Ce(Ru/sub 1-x/Os/sub x/)/sub 3/B/sub 2/, as well as results of static susceptibility and dc electrical resistivity measurements across the series. 9 refs., 3 figs., 2 tabs.
- Research Organization:
- Ames Lab., IA (USA)
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6643113
- Report Number(s):
- IS-M-615; CONF-870142-16; ON: DE89003741
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BORIDES
BORON COMPOUNDS
CERIUM BORIDES
CERIUM COMPOUNDS
CRITICAL TEMPERATURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FLUCTUATIONS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
ORIENTATION
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SPIN ORIENTATION
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VARIATIONS
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BORIDES
BORON COMPOUNDS
CERIUM BORIDES
CERIUM COMPOUNDS
CRITICAL TEMPERATURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FLUCTUATIONS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
ORIENTATION
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SPIN ORIENTATION
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VARIATIONS