110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same
- Downers Grove, IL
- Joliet, IL
- Orland Park, IL
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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 5173476
- OSTI ID:
- 868608
- Country of Publication:
- United States
- Language:
- English
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 |
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 |
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Related Subjects
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
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