Specific heat of the high T/sub c/ superconductors (La,M)/sub 2/CuO/sub 4/ and YBa/sub 2/Cu/sub 3/O/sub 7/ in magnetic fields. [M = Ca,Sr]
Conference
·
OSTI ID:6197986
The specific heats, C, of the high T/sub c/ superconductors YBa/sub 2/Cu/sub 3/O/sub 7/, La/sub 1.85/Ca/sub 0.15/CuO/sub 4/ and La/sub 1.85/Sr/sub 0.15/CuO/sub 4/ have been measured from 0.4K to above the superconducting transition temperature in magnetic fields, H, from 0 to 7T. From measured changes in C with H, values of ..gamma..(H) = (C(H)/T(/sub T=0/ and ..delta..C/T/sub c/ = (C/sub s/-C/sub n/)/T)/sub T=T/sub c// have been evaluated. These results have been used to estimate the normal state ..gamma.., the fraction of the sample that is superconducting in zero field, f/sub s/, and the value of the upper critical field, (H/sub c2/)/sub T=0/. 4 refs., 3 figs.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6197986
- Report Number(s):
- LBL-23872; CONF-870881-1; ON: DE87014680
- Country of Publication:
- United States
- Language:
- English
Similar Records
Magnetic field dependence of the specific heat of some high-T/sub c/
Low-temperature specific heat of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ and La/sub 2/CuO/sub 4/
Upper critical fields and high superconducting transition temperatures of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ and La/sub 1. 85/Ba/sub 0. 15/CuO/sub 4/
Conference
·
Tue Mar 31 23:00:00 EST 1987
·
OSTI ID:6296300
Low-temperature specific heat of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ and La/sub 2/CuO/sub 4/
Journal Article
·
Sat Oct 01 00:00:00 EDT 1988
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6781667
Upper critical fields and high superconducting transition temperatures of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ and La/sub 1. 85/Ba/sub 0. 15/CuO/sub 4/
Journal Article
·
Sun Mar 01 23:00:00 EST 1987
· Appl. Phys. Lett.; (United States)
·
OSTI ID:6973293
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CERAMICS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
IMPURITIES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC FIELDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POINT DEFECTS
RARE EARTH COMPOUNDS
SCHOTTKY DEFECTS
SPECIFIC HEAT
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VACANCIES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CERAMICS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
IMPURITIES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC FIELDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POINT DEFECTS
RARE EARTH COMPOUNDS
SCHOTTKY DEFECTS
SPECIFIC HEAT
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VACANCIES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES