Effect of oxygen partial pressure on the transformation between high T sub c and low T sub c phases in a Bi-Pb-Sr-Ca-Cu-O system

Journal Article · Mon Sep 18 00:00:00 EDT 1989 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.102467· OSTI ID:5375344

Lee, H K; Lee, K W; Ha, D H; Park, K; Park, J C ^[1]

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1. Korea Standards Research Institute, P. O. Box 3, Taedok Science Town, Taejon 302-340, Korea (KR)

The effect of oxygen partial pressure on the stability of the high {ital T}{sub {ital c}} phase ({gt}100 K) in a Bi-Pb-Sr-Ca-Cu-O system has been studied using resistivity, x-ray diffraction, and ac susceptibility measurements. It was observed that part of the high {ital T}{sub {ital c}} phase formed by sintering at 840 {degree}C in a low oxygen partial pressure of 1/10 atmosphere was transformed into a low {ital T}{sub {ital c}} phase ({similar to}80 K) and an insulating phase by heating at the same sintering temperature in O{sub 2} of one atmosphere. The original high {ital T}{sub {ital c}} phase was restored upon retreatment at the same temperature in a low oxygen partial pressure of 1/10 atmosphere.

• OSTI ID: 5375344
• Journal Information: Applied Physics Letters; (USA), Vol. 55:12; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH OXIDES
SUPERCONDUCTIVITY
CALCIUM OXIDES
COPPER OXIDES
LEAD OXIDES
STRONTIUM OXIDES
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
HEATING
LOW TEMPERATURE
MAGNETIC SUSCEPTIBILITY
OXYGEN
PARTIAL PRESSURE
PHASE TRANSFORMATIONS
SINTERING
STABILITY
TRANSITION TEMPERATURE
VERY HIGH TEMPERATURE
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
DATA
DIFFRACTION
ELECTRICAL PROPERTIES
ELEMENTS
FABRICATION
INFORMATION
LEAD COMPOUNDS
MAGNETIC PROPERTIES
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
STRONTIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity