X-Ray Structure Study of the High-Tc Phase of the Bi(Pb)–Sr–Ca–Cu–O System

Šı́chová, H.; Charvát, Jindřich; Daniš, S.

doi:10.1002/1521-396x(199708)162:2<679::aid-pssa679>3.0.co;2-n

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1999

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“…The complexities of BiSrCaCuO phase diagrams as evidenced by difficulties associated with preparing single phase superconducting Bi2Sr2CuOy (Bi-220 l), Bi2Sr2CaCu2OY (Bi- 22 12) and Bi2Sr2Ca2Cu30y (Bi-2223) samples with superconducting transition temperatures of (10-1 5 ) K, 85K and 1 10K, respectively, have been reported repeatedly [1]- [7].…”

Section: Introductionmentioning

confidence: 99%

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Preparation of unleaded BSCCO superconductor with critical temperatures of 110 K

Pryrkova

Tomilo

1999

IEEE Trans. Appl. Supercond.

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The results of the unleaded synthesis, and supsconducting properties, and phase composition investigation of high-T, superconductors obtained in the BiSrCaCuO (BSCCO system), when partially substituting copper, oxide for copper are presented. Synthesized under special conditions, samples of BiSrCa((1-x) CuO+xCu)hOy with x=(O.2-0.3) revealed TC(R=0)=(102-107)K and consisted of the single superconduding phase BhSrzCaCu2O,. The other impurity phases were not superconductors.

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Section: Introductionmentioning

confidence: 99%

“…The phase Bi-2223 has typically been prepared by lead doping [2],[5]- [7]. The lead doping is known to accelerate the formation of Bi-2223 phase.…”

Section: Introductionmentioning

confidence: 99%