NIST High Temp. Superconducting Materials (HTS) Database:

NIST Standard Reference Database 62

Last Update to Data Content: 1996

DOI: https://doi.org/10.18434/T4KP8J


Bibliographic Information

Title: High-Temperature Resistivity and Oxygen Diffusion in Bi2Sr2CaCu2Ox
Author(s): S. McKernan and A. Zettl
Publication: Physica C Volume: 209 Issue: Not Available Year: 1993 Page(s): 585-590
Editor(s): Not Available
Publisher: Elsevier Science Publishers B.V.
Language: English
Notes: Not Available
Keywords: Material Specification, Diffusion Coefficient

Materials and Properties

Bi:2212; [Bi-Sr-Ca-Cu-O]
Material Specification for Bi:2212; [Bi-Sr-Ca-Cu-O] Process: Melt Processed
Notes: The authors cite J. Imer et al., Phys. Rev. Lett., Vol. 62, 336 (1989), and summarize the procedure as follows. "Single crystal samples of BSCCO were prepared in a melt reaction of high purity precursors... Crystals were removed from the melt using adhesive tape and were subsequently cut to form long narrow bars for electrical resistance measurements. Typical dimensions of a cut sample were 1 mm x 250 µm x 50 µm."
Formula: Bi2Sr2CaCu2Ox
Informal Name: Bi:2212
Chemical Family: Bi-Sr-Ca-Cu-O
Chemical Class: Oxide
Structure Type: Single Crystal
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Diffusion Coefficient for Bi:2212; [Bi-Sr-Ca-Cu-O]
Diffusing Species () Temperature (K) 1000/T (K-1) Diffusion Coefficient (log10(cm2/s))
O2 695 1.44 -7.3
O2 765 1.31 -6.7
O2 870 1.15 -5.7
O2 970 1.03 -4.9
Measurement Method: Four-probe method
"... we report studies of the high temperature (25 °C to 700 °C) resistivity of single crystal BSCCO where the crystals are subjected to environments with varying oxygen concentration... Real-time experiments have been performed where the sample resistance is continuously monitored at fixed temperature as the environmental conditions are altered in a step-function fashion. The time evolution of the resistance allows oxygen diffusion constants to be determined... Samples were mounted on a quartz substrate with one mil gold four probe resistance leads attached using silver paint... The quartz substrate and the BSCCO crystal were then mounted on an alumina probe in close proximity to a chromel/alumel thermocouple which was referenced to liquid nitrogen. The four sample leads were attached to four ten mil gold wires which ran the length of the probe... The oxygen concentration in the sample environment (0.1 MPa = 1 atm pressure) was adjusted by mixing with argon. Concentrations were controlled using calibrated flowmeters."

Cautions: Evaluated Data
Digitized data were obtained from Figure 5 of the paper.