Pressure dependence of the superconducting transition temperature in alkali tungsten bronzes

Journal Article · Tue Jun 01 00:00:00 EDT 1976 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00116307· OSTI ID:7339543

Bloom, D; Shanks, H R; Barnes, J; McKee, K D; Ostenson, J E; Finnemore, D K

The superconducting transition temperatures have been measured for the tetragonal I phase of Na/sub 0/./sub 23/WO/sub 3/, the hexagonal phase of K/sub 0/./sub 33/WO/sub 3/, and the hexagonal phase of Rb/sub 0/./sub 33/WO/sub 3/ for pressures up to 20,000 bar. The slope of the curves is +1.7 x 10/sup -5/ /sup 0/K/bar for the sodium bronze, -5.8 x 10/sup -5/ /sup 0/K/bar for the potassium bronze, and -1.5 x 10/sup -5/ /sup 0/K/bar for the rubidium bronze. A sharp change in slope of the transition temperature vs. pressure curve for the potassium bronze at 4000 bar may indicate a phase change.

• Research Organization: Ames Lab., IA
• OSTI ID: 7339543
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 23:5/6; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HEXAGONAL LATTICES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
RUBIDIUM COMPOUNDS
RUBIDIUM OXIDES
SODIUM COMPOUNDS
SODIUM OXIDES
STOICHIOMETRY
SUPERCONDUCTIVITY
TETRAGONAL LATTICES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
VERY HIGH PRESSURE