The novel high temperature superconducting Ba-Ca-Cu-O system

C. W. Chu; Z. L. Du; Y. Y. Xue; Y. Cao; N. L. Wu; I. Rusakova; M. Hervieu; B. Raveau

doi:10.1016/S0022-3697(98)00206-6

The novel high temperature superconducting Ba-Ca-Cu-O system

C. W. Chu, Z. L. Du, Y. Y. Xue, Y. Cao, N. L. Wu, I. Rusakova, M. Hervieu, B. Raveau

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Abstract

Two new high temperature superconducting homologous series of the Ba-Ca-Cu-O system have been synthesized under high pressure: Ba₂Ca_n-1Cu_nO_2n+2 [02(n -1)n] interstitially doped with Ca or Ca and Cu, and CaBa₂Ca_n-1Cu_nO_2n+3 [Ca-12(n - 1)n] with or without partial substitution of Ca between the BaO-layers by Cu. 02(n - 1)n with an I4-symmetry displays a T_c above 126 K and degrades to a lower T_c compound when exposed to air, whereas Ca-12(n - 1)n with a P4-symmetry shows a T_c only up to 107 K but is stable in air. They form a good system for studying the effects of local symmetry on superconductivity and instability.

Original language	English
Pages (from-to)	2173-2179
Number of pages	7
Journal	Journal of Physics and Chemistry of Solids
Volume	59
Issue number	10-12
DOIs	https://doi.org/10.1016/S0022-3697(98)00206-6
Publication status	Published - 1998

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/S0022-3697(98)00206-6

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@article{cea047fcaa49443eb1d82d71b1167d93,

title = "The novel high temperature superconducting Ba-Ca-Cu-O system",

abstract = "Two new high temperature superconducting homologous series of the Ba-Ca-Cu-O system have been synthesized under high pressure: Ba2Can-1CunO2n+2 [02(n -1)n] interstitially doped with Ca or Ca and Cu, and CaBa2Can-1CunO2n+3 [Ca-12(n - 1)n] with or without partial substitution of Ca between the BaO-layers by Cu. 02(n - 1)n with an I4-symmetry displays a Tc above 126 K and degrades to a lower Tc compound when exposed to air, whereas Ca-12(n - 1)n with a P4-symmetry shows a Tc only up to 107 K but is stable in air. They form a good system for studying the effects of local symmetry on superconductivity and instability.",

author = "Chu, {C. W.} and Du, {Z. L.} and Xue, {Y. Y.} and Y. Cao and Wu, {N. L.} and I. Rusakova and M. Hervieu and B. Raveau",

note = "Funding Information: This work is supported in part by NSF Grant No. DMR 95-00625 [new one: DMR-9804325], EPRI RP-8066-04, the T. L. L. Temple Foundation, John J. and Rebecca Moores Endowment, and the Texas Center for Superconductivity at the University of Houston. ",

year = "1998",

doi = "10.1016/S0022-3697(98)00206-6",

language = "English",

volume = "59",

pages = "2173--2179",

journal = "Journal of Physics and Chemistry of Solids",

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TY - JOUR

T1 - The novel high temperature superconducting Ba-Ca-Cu-O system

AU - Chu, C. W.

AU - Du, Z. L.

AU - Xue, Y. Y.

AU - Cao, Y.

AU - Wu, N. L.

AU - Rusakova, I.

AU - Hervieu, M.

AU - Raveau, B.

N1 - Funding Information: This work is supported in part by NSF Grant No. DMR 95-00625 [new one: DMR-9804325], EPRI RP-8066-04, the T. L. L. Temple Foundation, John J. and Rebecca Moores Endowment, and the Texas Center for Superconductivity at the University of Houston.

PY - 1998

Y1 - 1998

N2 - Two new high temperature superconducting homologous series of the Ba-Ca-Cu-O system have been synthesized under high pressure: Ba2Can-1CunO2n+2 [02(n -1)n] interstitially doped with Ca or Ca and Cu, and CaBa2Can-1CunO2n+3 [Ca-12(n - 1)n] with or without partial substitution of Ca between the BaO-layers by Cu. 02(n - 1)n with an I4-symmetry displays a Tc above 126 K and degrades to a lower Tc compound when exposed to air, whereas Ca-12(n - 1)n with a P4-symmetry shows a Tc only up to 107 K but is stable in air. They form a good system for studying the effects of local symmetry on superconductivity and instability.

AB - Two new high temperature superconducting homologous series of the Ba-Ca-Cu-O system have been synthesized under high pressure: Ba2Can-1CunO2n+2 [02(n -1)n] interstitially doped with Ca or Ca and Cu, and CaBa2Can-1CunO2n+3 [Ca-12(n - 1)n] with or without partial substitution of Ca between the BaO-layers by Cu. 02(n - 1)n with an I4-symmetry displays a Tc above 126 K and degrades to a lower Tc compound when exposed to air, whereas Ca-12(n - 1)n with a P4-symmetry shows a Tc only up to 107 K but is stable in air. They form a good system for studying the effects of local symmetry on superconductivity and instability.

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JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 10-12

ER -

The novel high temperature superconducting Ba-Ca-Cu-O system

Abstract

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