110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same
Abstract
A superconductor consisting of a sufficiently pure phase of the oxides of Bi, Sr, Ca, and Cu to exhibit a resistive zero near 110K resulting from the process of forming a mixture of Bi.sub.2 O.sub.3, SrCO.sub.3, CaCO.sub.3 and CuO into aparticulate compact wherein the atom ratios are Bi.sub.2, Sr.sub.1.2-2.2, Ca.sub.1.8-2.4, Cu.sub.3. Thereafter, heating the particulate compact rapidly in the presence of oxygen to an elevated temperature near the melting point of the oxides to form a sintered compact, and then maintaining the sintered compact at the elevated temperature for a prolonged period of time. The sintered compact is cooled and reground. Thereafter, the reground particulate material is compacted and heated in the presence of oxygen to an elevated temperature near the melting point of the oxide and maintained at the elevated temperature for a time sufficient to provide a sufficiently pure phase to exhibit a resistive zero near 110K.
- Inventors:
-
- Downers Grove, IL
- Joliet, IL
- Orland Park, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 868608
- Patent Number(s):
- 5173476
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 110k; bi-sr-ca-cu-o; superconductor; oxide; method; consisting; sufficiently; pure; phase; oxides; sr; cu; exhibit; resistive; zero; near; resulting; process; forming; mixture; srco; caco; cuo; aparticulate; compact; atom; ratios; 2-2; 8-2; thereafter; heating; particulate; rapidly; presence; oxygen; elevated; temperature; melting; form; sintered; maintaining; prolonged; period; time; cooled; reground; material; compacted; heated; maintained; sufficient; provide; sintered compact; -sr-ca-cu-o superconductor; time sufficient; particulate material; elevated temperature; prolonged period; temperature near; superconductor oxide; bi-sr-ca-cu-o superconductor; /505/252/
Citation Formats
Veal, Boyd W, Downey, John W, Lam, Daniel J, and Paulikas, Arvydas P. 110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same. United States: N. p., 1992.
Web.
Veal, Boyd W, Downey, John W, Lam, Daniel J, & Paulikas, Arvydas P. 110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same. United States.
Veal, Boyd W, Downey, John W, Lam, Daniel J, and Paulikas, Arvydas P. Wed .
"110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same". United States. https://www.osti.gov/servlets/purl/868608.
@article{osti_868608,
title = {110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same},
author = {Veal, Boyd W and Downey, John W and Lam, Daniel J and Paulikas, Arvydas P},
abstractNote = {A superconductor consisting of a sufficiently pure phase of the oxides of Bi, Sr, Ca, and Cu to exhibit a resistive zero near 110K resulting from the process of forming a mixture of Bi.sub.2 O.sub.3, SrCO.sub.3, CaCO.sub.3 and CuO into aparticulate compact wherein the atom ratios are Bi.sub.2, Sr.sub.1.2-2.2, Ca.sub.1.8-2.4, Cu.sub.3. Thereafter, heating the particulate compact rapidly in the presence of oxygen to an elevated temperature near the melting point of the oxides to form a sintered compact, and then maintaining the sintered compact at the elevated temperature for a prolonged period of time. The sintered compact is cooled and reground. Thereafter, the reground particulate material is compacted and heated in the presence of oxygen to an elevated temperature near the melting point of the oxide and maintained at the elevated temperature for a time sufficient to provide a sufficiently pure phase to exhibit a resistive zero near 110K.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}
Works referenced in this record:
High-Resolution Electron Microscopy of Modulated Structure in the New High- T c Superconductors of the Bi-Sr-Ca-Cu-O System
journal, March 1988
- Matsui, Yoshio; Maeda, Hiroshi; Tanaka, Yoshiaki
- Japanese Journal of Applied Physics, Vol. 27, Issue Part 2, No. 3
Electron microscopy on the Tc = 110 K (midpoint) phase in the system Bi2O3–SrO–CaO–CuO
journal, April 1988
- Zandbergen, H. W.; Huang, Y. K.; Menken, M. J. V.
- Nature, Vol. 332, Issue 6165
High- T c Phase Promoted and Stabilized in the Bi, Pb-Sr-Ca-Cu-O System
journal, June 1988
- Takano, Mikio; Takada, Jun; Oda, Kiichi
- Japanese Journal of Applied Physics, Vol. 27, Issue Part 2, No. 6