Published April 1, 1988
| Version v1
Journal article
High-resolution heat capacity of YBa2Cu3O/sub 6.9/ over the superconducting transition region
Creators
- 1. Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
Description
High-resolution heat-capacity data have been determined for a single-phase sample of YBa2Cu3O/sub 6.9/ over the temperature range 77--150 K. Two anomalies were found: a λ-type transition occurring at 86.65 K and a discontinuity accompanied by a first-order transition occurring at 90.30 K. The discontinuity has a value of ΔC/sub p//T = 62 mJ (mol f.u.)/sup -1/ K/sup -2/, where f.u. denotes formula unit. An estimation of the latent heat and entropy associated with the first-order transition is given. The anomalies in the heat capacity are related to the changes in the resistance and Meissner effect and a mixed superconducting-normal state is proposed
Additional details
Publishing Information
- Journal Title
- Phys. Rev., B: Condens. Matter
- Journal Volume
- 37
- Journal Issue
- 10
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 5909-5911
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19062475
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; CRITICAL CURRENT; EXPERIMENTAL DATA; LOW TEMPERATURE; MEISSNER-OCHSENFELD EFFECT; SPECIFIC HEAT; SUPERCONDUCTIVITY; TYPE-II SUPERCONDUCTORS; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CURRENTS; DATA; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; INFORMATION; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS