Soft mode behavior in the orthorhombic to tetragonal transition in the high T/sub c/ superconductor YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/
Journal Article
·
· Appl. Phys. Lett.; (United States)
The Young's modulus and rigidity modulus of the high T/sub c/ superconductor YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ is measured from 300 to 1125 K using a 40-kHz ultrasonic resonant composite oscillator. Marked soft mode behavior occurs in both moduli in the vicinity of the orthorhombic to tetragonal transition, the softening being associated with orthorhombic shear fluctuations. The deep soft mode cusp allows the transition to be precisely determined as a function of oxygen partial pressure. A mechanical damping peak similar to that in Y-ZrO/sub 2/ occurs at 800 K presumably arising from oxygen ion hopping.
- Research Organization:
- Physics and Engineering Laboratory, Department of Scientific and Industrial Research, Private Bag, Lower Hutt, New Zealand
- OSTI ID:
- 5681041
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 52:6; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Orthorhombic-tetragonal phase transition in high-temperature superconductor YBa/sub 2/Cu/sub 3/O/sub 7/
Oxygen ordering and the orthorhombic-to-tetragonal phase transition in YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/
Oxygen self-diffusion coefficient in the superconductor YBa sub 2 Cu sub 3 O sub 7 minus. delta. from internal friction measurements
Journal Article
·
Mon Aug 03 00:00:00 EDT 1987
· Appl. Phys. Lett.; (United States)
·
OSTI ID:6512001
Oxygen ordering and the orthorhombic-to-tetragonal phase transition in YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/
Journal Article
·
Tue Sep 01 00:00:00 EDT 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6231376
Oxygen self-diffusion coefficient in the superconductor YBa sub 2 Cu sub 3 O sub 7 minus. delta. from internal friction measurements
Journal Article
·
Mon Oct 15 00:00:00 EDT 1990
· Journal of Applied Physics; (USA)
·
OSTI ID:6084907
Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
EXPANSION
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHASE TRANSFORMATIONS
SUPERCONDUCTORS
THERMAL EXPANSION
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YOUNG MODULUS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
EXPANSION
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHASE TRANSFORMATIONS
SUPERCONDUCTORS
THERMAL EXPANSION
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YOUNG MODULUS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES