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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: The Flexural Strength and Electrical Properties of a B-Doped BPSCCO Superconductor
Author(s): S. Abe, N. Nakamura, and K. Masumoto
Publication: Materials Letters Volume: 17 Issue: Not Available Year: 1993 Page(s): 4-8
Editor(s): Not Available
Publisher: Elsevier Science Publishers B.V.
Language: English
Notes: Not Available
Keywords: Material Specification, Crystallography, Critical Temperature, Resistivity (normal state), Flexural Strength

Materials and Properties

Bi:1112; [Bi(Pb,B)-Sr-Ca-Cu-O]
Material Specification for Bi:1112; [Bi(Pb,B)-Sr-Ca-Cu-O] Process: Solid State Reaction
Notes: "The samples were prepared by solid-state reaction using Bi2O3, PbO, SrCO3, CaCO3, CuO and B2O3 as starting reagents. Samples with nominal compositions were mixed for 360 ks by ball-milling, calcined at 1098 K for 36 ks in air, thoroughly reground and then cold-pressed into disk-shape pellets (2 cm in diameter and 1 mm in thickness) at a pressure of 400 MPa. The pellets were then sintered at 1123 K for 720 ks in air."
Formula: Bi0.3B0.5Pb0.2SrCaCuxOy
Informal Name: Bi:1112
Chemical Family: Bi(Pb,B)-Sr-Ca-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Crystallography for Bi:1112; [Bi(Pb,B)-Sr-Ca-Cu-O]
Crystal System: Tetragonal
Formula Units per Cell:
Space Group:
Cell Parameters
x of Cux (formula units) Temp K a Å b Å c Å
2.2 296 5.404 -- 37.32
2.4 296 5.410 -- 37.30
2.5 296 5.409 -- 37.30
2.7 296 5.408 -- 37.29
3.0 296 5.406 -- 37.27
Measurement Method: X-ray diffraction
"X-ray powder diffraction analysis at room temperature, using CoKα radiation, was performed to determine the lattice constants..." No additional measurement details were noted.

Cautions: Unevaluated Data
Digitized data were obtained from Figure 4 of the paper.
Critical Temperature for Bi:1112; [Bi(Pb,B)-Sr-Ca-Cu-O]
x of Cux (formula units) Tc (onset) () Critical Temperature (K)
2.2 115 105
2.5 116 107
2.7 114 100
Measurement Method: Four-probe method
"The electrical resistivity... (was) measured on bar-shaped specimens cut from the pellets... by standard four-probe... tests." No additional measurement details were noted.

Cautions: Unevaluated Data
Digitized data were obtained from Figure 2 of the paper.
Resistivity (normal state) for Bi:1112; [Bi(Pb,B)-Sr-Ca-Cu-O]
x of Cux (formula units) Temperature (K) Resistivity (normal state) (mΩ·cm)
2.2 105 0.0
2.2 109 2.1
2.2 114 3.9
2.2 125 4.7
2.2 150 5.4
2.2 200 6.4
Measurement Method: Four-probe method
"The electrical resistivity... (was) measured on bar-shaped specimens cut from the pellets... by standard four-probe... tests." No additional measurement details were noted.

Cautions: Unevaluated Data
Digitized data were obtained from Figure 6 of the paper.
Flexural Strength for Bi:1112; [Bi(Pb,B)-Sr-Ca-Cu-O]
x of Cux (formula units) Flexural Strength (MPa)
1.8 202
2.0 207
2.2 201
2.4 159
2.45 133
2.5 59
2.7 91
3.0 70
Measurement Method: Three-point bend
"The... flexural strength (was) measured on bar-shaped specimens cut from the pellets... by three-point bend tests." No additional measurement details were noted.

Cautions: Unevaluated Data
No stressing rate information was noted. The authors reported the flexural strength in units of "a.u." Digitized data were obtained from Figure 1 of the paper.