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Title: Quaternary system SrO-CaO-BaO-CuO at 950 C. 2: Phase equilibria related to the substitution Sr/Ba in (Sr/Ba){sub 2}Ca{sub 2}Cu{sub 2}Cu{sub 3}O{sub 7} and (Sr/Ba){sub 2}CaCu{sub 2}O{sub 5} samples

Abstract

A partial study of the solid-solid equilibria in the quaternary system BaO-SrO-CaO-CuO has been undertaken in order to determine the observed phases and their evolution when Ba is substituted for Sr in mixtures (Sr/Ba){sub 2}CaCu{sub 2}O{sub x} and (Sr/Ba){sub 2}Ca{sub 2}Cu{sub 3}O{sub x}. The temperature was fixed at 950 C and samples were elaborated under 1 bar of flowing oxygen. It has been shown that two four-phased domains exist in this quaternary system, including the following phases: ({und Ba}/Sr/Ca)CuO{sub 2}, ({und Sr/Ca}/Ba){sub 2}CuO{sub 3}, ({und Sr/Ca}/Ba){sub 14}Cu{sub 24}O{sub x}, and Ba{sub 4}CaCu{sub 3}O{sub 8} substituted Sr/Ca for the one and ({und Ba}/Sr/Ca)CuO{sub 2}, ({und Sr/Ca}/Ba){sub 2}CuO{sub 3}, ({und Sr/Ca}/Ba){sub 14}Cu{sub 24}O{sub x}, and ({und Sr/Ca}/Ba/)CuO{sub 2} for the other.

Authors:
; ; ;  [1]
  1. Univ. Claude Bernard-Lyon I, Villeurbanne (France)
Publication Date:
OSTI Identifier:
522371
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 32; Journal Issue: 8; Other Information: PBD: Aug 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PHASE STUDIES; STRONTIUM OXIDES; CALCIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; TEMPERATURE RANGE 1000-4000 K; EQUILIBRIUM; OXYGEN; DOMAIN STRUCTURE; CHEMICAL COMPOSITION

Citation Formats

Lebbou, K, Abraham, R, Trosset, S, and Cohen-Adad, M T. Quaternary system SrO-CaO-BaO-CuO at 950 C. 2: Phase equilibria related to the substitution Sr/Ba in (Sr/Ba){sub 2}Ca{sub 2}Cu{sub 2}Cu{sub 3}O{sub 7} and (Sr/Ba){sub 2}CaCu{sub 2}O{sub 5} samples. United States: N. p., 1997. Web. doi:10.1016/S0025-5408(97)00076-7.
Lebbou, K, Abraham, R, Trosset, S, & Cohen-Adad, M T. Quaternary system SrO-CaO-BaO-CuO at 950 C. 2: Phase equilibria related to the substitution Sr/Ba in (Sr/Ba){sub 2}Ca{sub 2}Cu{sub 2}Cu{sub 3}O{sub 7} and (Sr/Ba){sub 2}CaCu{sub 2}O{sub 5} samples. United States. https://doi.org/10.1016/S0025-5408(97)00076-7
Lebbou, K, Abraham, R, Trosset, S, and Cohen-Adad, M T. 1997. "Quaternary system SrO-CaO-BaO-CuO at 950 C. 2: Phase equilibria related to the substitution Sr/Ba in (Sr/Ba){sub 2}Ca{sub 2}Cu{sub 2}Cu{sub 3}O{sub 7} and (Sr/Ba){sub 2}CaCu{sub 2}O{sub 5} samples". United States. https://doi.org/10.1016/S0025-5408(97)00076-7.
@article{osti_522371,
title = {Quaternary system SrO-CaO-BaO-CuO at 950 C. 2: Phase equilibria related to the substitution Sr/Ba in (Sr/Ba){sub 2}Ca{sub 2}Cu{sub 2}Cu{sub 3}O{sub 7} and (Sr/Ba){sub 2}CaCu{sub 2}O{sub 5} samples},
author = {Lebbou, K and Abraham, R and Trosset, S and Cohen-Adad, M T},
abstractNote = {A partial study of the solid-solid equilibria in the quaternary system BaO-SrO-CaO-CuO has been undertaken in order to determine the observed phases and their evolution when Ba is substituted for Sr in mixtures (Sr/Ba){sub 2}CaCu{sub 2}O{sub x} and (Sr/Ba){sub 2}Ca{sub 2}Cu{sub 3}O{sub x}. The temperature was fixed at 950 C and samples were elaborated under 1 bar of flowing oxygen. It has been shown that two four-phased domains exist in this quaternary system, including the following phases: ({und Ba}/Sr/Ca)CuO{sub 2}, ({und Sr/Ca}/Ba){sub 2}CuO{sub 3}, ({und Sr/Ca}/Ba){sub 14}Cu{sub 24}O{sub x}, and Ba{sub 4}CaCu{sub 3}O{sub 8} substituted Sr/Ca for the one and ({und Ba}/Sr/Ca)CuO{sub 2}, ({und Sr/Ca}/Ba){sub 2}CuO{sub 3}, ({und Sr/Ca}/Ba){sub 14}Cu{sub 24}O{sub x}, and ({und Sr/Ca}/Ba/)CuO{sub 2} for the other.},
doi = {10.1016/S0025-5408(97)00076-7},
url = {https://www.osti.gov/biblio/522371}, journal = {Materials Research Bulletin},
number = 8,
volume = 32,
place = {United States},
year = {Fri Aug 01 00:00:00 EDT 1997},
month = {Fri Aug 01 00:00:00 EDT 1997}
}