Melting and freezing of Bi-Sr-Ca-Cu-O compounds

J. Polonka; Xu Ming Xu; A. I. Goldman; D. K. Finnemore; Q. Li

doi:10.1088/0953-2048/5/1S/032

Melting and freezing of Bi-Sr-Ca-Cu-O compounds

J. Polonka
, Xu Ming Xu
, A. I. Goldman
, D. K. Finnemore
, Q. Li

Iowa State University

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

High temperature X-ray studies have been carried out for the melting and refreezing of Bi₂Sr₂Ca₁Cu₂O _{8- delta} and Bi₂Sr₂Ca₁Cu ₂O_{8- delta}/Ag composites in order to develop methods to refine the microstructure of these conductors. At least three different insulating phases are stable in the 870 to 890 degrees C temperature range, (Sr,Ca)₁Cu,O₂, (Sr,Ca)₂Cu₁O ₃ and (S,Ca)O. These Bi-poor compounds nucleate and grow on a time scale of a few minutes, but the Bi(2212) supercools a great deal and is not observed to nucleate and grow for periods of an hour at temperatures above 820 degrees C.

Original language	English
Article number	032
Pages (from-to)	S157-S160
Journal	Superconductor Science and Technology
Volume	5
Issue number	1S
DOIs	https://doi.org/10.1088/0953-2048/5/1S/032
State	Published - 1992

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title = "Melting and freezing of Bi-Sr-Ca-Cu-O compounds",

abstract = "High temperature X-ray studies have been carried out for the melting and refreezing of Bi2Sr2Ca1Cu2O 8- delta and Bi2Sr2Ca1Cu 2O8- delta/Ag composites in order to develop methods to refine the microstructure of these conductors. At least three different insulating phases are stable in the 870 to 890 degrees C temperature range, (Sr,Ca)1Cu,O2, (Sr,Ca)2Cu1O 3 and (S,Ca)O. These Bi-poor compounds nucleate and grow on a time scale of a few minutes, but the Bi(2212) supercools a great deal and is not observed to nucleate and grow for periods of an hour at temperatures above 820 degrees C.",

author = "J. Polonka and \{Ming Xu\}, Xu and Goldman, \{A. I.\} and Finnemore, \{D. K.\} and Q. Li",

year = "1992",

doi = "10.1088/0953-2048/5/1S/032",

language = "English",

volume = "5",

pages = "S157--S160",

journal = "Superconductor Science and Technology",

issn = "0953-2048",

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T1 - Melting and freezing of Bi-Sr-Ca-Cu-O compounds

AU - Polonka, J.

AU - Ming Xu, Xu

AU - Goldman, A. I.

AU - Finnemore, D. K.

AU - Li, Q.

PY - 1992

Y1 - 1992

N2 - High temperature X-ray studies have been carried out for the melting and refreezing of Bi2Sr2Ca1Cu2O 8- delta and Bi2Sr2Ca1Cu 2O8- delta/Ag composites in order to develop methods to refine the microstructure of these conductors. At least three different insulating phases are stable in the 870 to 890 degrees C temperature range, (Sr,Ca)1Cu,O2, (Sr,Ca)2Cu1O 3 and (S,Ca)O. These Bi-poor compounds nucleate and grow on a time scale of a few minutes, but the Bi(2212) supercools a great deal and is not observed to nucleate and grow for periods of an hour at temperatures above 820 degrees C.

AB - High temperature X-ray studies have been carried out for the melting and refreezing of Bi2Sr2Ca1Cu2O 8- delta and Bi2Sr2Ca1Cu 2O8- delta/Ag composites in order to develop methods to refine the microstructure of these conductors. At least three different insulating phases are stable in the 870 to 890 degrees C temperature range, (Sr,Ca)1Cu,O2, (Sr,Ca)2Cu1O 3 and (S,Ca)O. These Bi-poor compounds nucleate and grow on a time scale of a few minutes, but the Bi(2212) supercools a great deal and is not observed to nucleate and grow for periods of an hour at temperatures above 820 degrees C.

UR - https://www.scopus.com/pages/publications/0042710909

U2 - 10.1088/0953-2048/5/1S/032

DO - 10.1088/0953-2048/5/1S/032

M3 - Article

AN - SCOPUS:0042710909

SN - 0953-2048

VL - 5

SP - S157-S160

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 1S

M1 - 032

ER -

Melting and freezing of Bi-Sr-Ca-Cu-O compounds

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