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Title: 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:
 [1];  [2];  [3];  [1]
  1. Downers Grove, IL
  2. Joliet, IL
  3. Orland Park, IL
Issue Date:
Research Org.:
Argonne National Lab. (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):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
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 = {1992},
month = {1}
}

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


A New High- T c Oxide Superconductor without a Rare Earth Element
journal, February 1988


Electron microscopy on the Tc = 110 K (midpoint) phase in the system Bi2O3–SrO–CaO–CuO
journal, April 1988


High- T c Phase Promoted and Stabilized in the Bi, Pb-Sr-Ca-Cu-O System
journal, June 1988