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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: Thermal Expansion Measurements Using Neutron Diffraction of Bi2CaSr2Cu2Ox
Author(s): R.H. Arendt, M.F. Garbauskas, C.A. Meyer, F. J. Rotella, J. D. Jorgensen, and R. L. Hitterman
Publication: Physica C Volume: 182 Issue: Not Available Year: 1991 Page(s): 73-78
Editor(s): Not Available
Publisher: Elsevier Science Publishers B.V.
Language: English
Notes: Not Available
Keywords: Material Specification, Crystallography, Thermal Expansion

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 R.H. Arendt et al., J. Mater. Res. Vol. 5, 33 (1990).
Formula: Bi2Sr2CaCu2Ox
Informal Name: Bi:2212
Chemical Family: Bi-Sr-Ca-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Crystallography for Bi:2212; [Bi-Sr-Ca-Cu-O]
Crystal System: Orthorhombic
Formula Units per Cell:
Space Group:
Cell Parameters
Environment () Temp K a Å b Å c Å
air 200 5.424 5.400 30.860
air 300 5.432 5.407 30.931
air 400 5.440 5.416 31.001
air 500 5.448 5.424 31.062
O2 in N2 200 5.426 5.401 30.888
O2 in N2 300 5.434 5.409 30.952
O2 in N2 400 5.440 5.416 31.016
O2 in N2 500 5.447 5.423 31.063
Ar 200 5.427 5.404 30.921
Ar 300 5.435 5.411 30.981
Ar 400 5.442 5.418 31.035
Ar 500 5.448 5.425 31.085
Measurement Method: Neutron diffraction
"The neutron diffraction measurements were made on the Special Environment Powder Diffractometer... at IPNS... For the experiment, the... powder was die pressed into 9.5 mm... diam.,... 12 mm... long pellets, which were placed in a Ag foil lined quartz glass capsule. The capsule was mounted in the high-temperature controlled-environment furnace, which allows samples to be heated... while in a controlled gaseous atmosphere... the sample temperature was ramped, at 1 °C/min,... Rietveld analysis... was used to determine the lattice parameters... the Ag lattice constant was used to calculate the sample temperature... Data were collected in flowing (200 cm3 min-1) air, 0.980% oxygen in nitrogen, and pure argon... Thermal expansion coefficients were determined... by means of a linear least-squares fit of the temperature dependence of the lattice constants."

Cautions: Evaluated Data
Digitized data were obtained from Figures 2, 4, and 6 of the paper.
Thermal Expansion for Bi:2212; [Bi-Sr-Ca-Cu-O]
Environment () Axis () Thermal Expansion (10-6 K-1)
Air a 14.52
Air b 14.79
Air c 21.75
O2 in N2 a 13.47
O2 in N2 b 13.76
O2 in N2 c 19.45
Ar a 13.27
Ar b 13.27
Ar c 17.92
Measurement Method: Neutron diffraction
"The neutron diffraction measurements were made on the Special Environment Powder Diffractometer... at IPNS... For the experiment, the... powder was die pressed into 9.5 mm... diam.,... 12 mm... long pellets, which were placed in a Ag foil lined quartz glass capsule. The capsule was mounted in the high-temperature controlled-environment furnace, which allows samples to be heated... while in a controlled gaseous atmosphere... the sample temperature was ramped, at 1 °C/min,... Rietveld analysis... was used to determine the lattice parameters... the Ag lattice constant was used to calculate the sample temperature... Data were collected in flowing (200 cm3 min-1) air, 0.980% oxygen in nitrogen, and pure argon... Thermal expansion coefficients were determined... by means of a linear least-squares fit of the temperature dependence of the lattice constants."

Cautions: Evaluated Data