Liquid-phase-assisted synthesis of single-thallium-layer superconductors

Y. F. Li; Z. Z. Sheng; Nan Chen; S. E. Dorris; M. T. Lanagan; K. C. Goretta

doi:10.1016/0025-5408(94)90087-6

Liquid-phase-assisted synthesis of single-thallium-layer superconductors

Y. F. Li, Z. Z. Sheng, Nan Chen, S. E. Dorris, M. T. Lanagan, K. C. Goretta

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Abstract

TlBa₂Ca₂Cu₃O_x (Tl-1223) powder was synthesized in O₂ from a mixture of Tl₂O₃ and Ba₂Ca₂Cu₃O_x. The peritectic melting point of Tl-1223 in O₂ is 905°C. It was found that the maximum phase conversion to the Tl-1223 phase occurred at 895-900°C. A small concentration of liquid was present at that temperature. Because of the rapid kinetics of Tl-1223 formation, CaO and BaCuO₂ phases became isolated from the Tl₂O₃ and thus remained in the final microstructure. In samples heated at 895°C, the CaO and BaCuO₂ proved to be sufficiently small to act as flux-pinning sites.

Original language	English (US)
Pages (from-to)	1057-1064
Number of pages	8
Journal	Materials Research Bulletin
Volume	29
Issue number	10
DOIs	https://doi.org/10.1016/0025-5408(94)90087-6
State	Published - Oct 1994

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/0025-5408(94)90087-6

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title = "Liquid-phase-assisted synthesis of single-thallium-layer superconductors",

abstract = "TlBa2Ca2Cu3Ox (Tl-1223) powder was synthesized in O2 from a mixture of Tl2O3 and Ba2Ca2Cu3Ox. The peritectic melting point of Tl-1223 in O2 is 905°C. It was found that the maximum phase conversion to the Tl-1223 phase occurred at 895-900°C. A small concentration of liquid was present at that temperature. Because of the rapid kinetics of Tl-1223 formation, CaO and BaCuO2 phases became isolated from the Tl2O3 and thus remained in the final microstructure. In samples heated at 895°C, the CaO and BaCuO2 proved to be sufficiently small to act as flux-pinning sites.",

author = "Li, {Y. F.} and Sheng, {Z. Z.} and Nan Chen and Dorris, {S. E.} and Lanagan, {M. T.} and Goretta, {K. C.}",

year = "1994",

month = oct,

doi = "10.1016/0025-5408(94)90087-6",

language = "English (US)",

volume = "29",

pages = "1057--1064",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Liquid-phase-assisted synthesis of single-thallium-layer superconductors

AU - Li, Y. F.

AU - Sheng, Z. Z.

AU - Chen, Nan

AU - Dorris, S. E.

AU - Lanagan, M. T.

AU - Goretta, K. C.

PY - 1994/10

Y1 - 1994/10

N2 - TlBa2Ca2Cu3Ox (Tl-1223) powder was synthesized in O2 from a mixture of Tl2O3 and Ba2Ca2Cu3Ox. The peritectic melting point of Tl-1223 in O2 is 905°C. It was found that the maximum phase conversion to the Tl-1223 phase occurred at 895-900°C. A small concentration of liquid was present at that temperature. Because of the rapid kinetics of Tl-1223 formation, CaO and BaCuO2 phases became isolated from the Tl2O3 and thus remained in the final microstructure. In samples heated at 895°C, the CaO and BaCuO2 proved to be sufficiently small to act as flux-pinning sites.

AB - TlBa2Ca2Cu3Ox (Tl-1223) powder was synthesized in O2 from a mixture of Tl2O3 and Ba2Ca2Cu3Ox. The peritectic melting point of Tl-1223 in O2 is 905°C. It was found that the maximum phase conversion to the Tl-1223 phase occurred at 895-900°C. A small concentration of liquid was present at that temperature. Because of the rapid kinetics of Tl-1223 formation, CaO and BaCuO2 phases became isolated from the Tl2O3 and thus remained in the final microstructure. In samples heated at 895°C, the CaO and BaCuO2 proved to be sufficiently small to act as flux-pinning sites.

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EP - 1064

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 10

ER -

Liquid-phase-assisted synthesis of single-thallium-layer superconductors

Abstract

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