Observation and identification of a 107 K superconducting family in the CaBa2Ca2Cu3O9-δ system

N. L. Wu; Z. L. Du; Y. Y. Xue; I. Rusakova; D. K. Ross; L. Gao; Y. Cao; Y. Y. Sun; C. W. Chu; M. Hervieu; B. Raveau

doi:10.1016/S0921-4534(99)00200-2

Observation and identification of a 107 K superconducting family in the CaBa₂Ca₂Cu₃O_9-δ system

N. L. Wu, Z. L. Du, Y. Y. Xue, I. Rusakova, D. K. Ross, L. Gao, Y. Cao, Y. Y. Sun, C. W. Chu, M. Hervieu, B. Raveau

Executive Vice President

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

6 Citations (Scopus)

Abstract

A new family of C-free high-temperature superconducting oxides in the Ba-Ca-Cu-O system showing a T_c up to 107 K has been synthesized under high pressure. Structural analyses, based on X-ray and electron diffractions and high resolution electron microscopy, have revealed that these oxides can be represented by CaBa₂Ca₂Cu₃O_9-δ [Ca-1223-Ba] with a tetragonal subcell that has lattice constants α approximately 3.85 angstroms and c approximately 16.5 angstroms and is isostructural to Tl-1223-Ba with the Tl sites occupied mainly by Ca. These oxides have the same active block of [(CuO₂)(Ca)(CuO₂)(Ca)(CuO₂)] but with cation mixing and substitution of Ca by Cu within the charge reservoir block [(BaO)(CaO)(BaO)]. This results in the observed variations in composition and superstructure but has only minor influence on T_c.

Original language	English
Pages (from-to)	227-234
Number of pages	8
Journal	Physica C: Superconductivity and its applications
Volume	315
Issue number	3
DOIs	https://doi.org/10.1016/S0921-4534(99)00200-2
Publication status	Published - 1999 Apr 20

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(99)00200-2

Cite this

@article{d3181d71d477467b816204886f4db601,

title = "Observation and identification of a 107 K superconducting family in the CaBa2Ca2Cu3O9-δ system",

abstract = "A new family of C-free high-temperature superconducting oxides in the Ba-Ca-Cu-O system showing a Tc up to 107 K has been synthesized under high pressure. Structural analyses, based on X-ray and electron diffractions and high resolution electron microscopy, have revealed that these oxides can be represented by CaBa2Ca2Cu3O9-δ [Ca-1223-Ba] with a tetragonal subcell that has lattice constants α approximately 3.85 angstroms and c approximately 16.5 angstroms and is isostructural to Tl-1223-Ba with the Tl sites occupied mainly by Ca. These oxides have the same active block of [(CuO2)(Ca)(CuO2)(Ca)(CuO2)] but with cation mixing and substitution of Ca by Cu within the charge reservoir block [(BaO)(CaO)(BaO)]. This results in the observed variations in composition and superstructure but has only minor influence on Tc.",

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

note = "Funding Information: This work is supported in part by NSF Grant No. DMR 95-00625, EPRI RP-8066-04, the State of Texas through the Texas Center for Superconductivity at the University of Houston, T.L.L. Temple Foundation, and the John J. and Rebecca Moores Endowment. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "1999",

month = apr,

day = "20",

doi = "10.1016/S0921-4534(99)00200-2",

language = "English",

volume = "315",

pages = "227--234",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - Observation and identification of a 107 K superconducting family in the CaBa2Ca2Cu3O9-δ system

AU - Wu, N. L.

AU - Du, Z. L.

AU - Xue, Y. Y.

AU - Rusakova, I.

AU - Ross, D. K.

AU - Gao, L.

AU - Cao, Y.

AU - Sun, Y. Y.

AU - Chu, C. W.

AU - Hervieu, M.

AU - Raveau, B.

N1 - Funding Information: This work is supported in part by NSF Grant No. DMR 95-00625, EPRI RP-8066-04, the State of Texas through the Texas Center for Superconductivity at the University of Houston, T.L.L. Temple Foundation, and the John J. and Rebecca Moores Endowment. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 1999/4/20

Y1 - 1999/4/20

N2 - A new family of C-free high-temperature superconducting oxides in the Ba-Ca-Cu-O system showing a Tc up to 107 K has been synthesized under high pressure. Structural analyses, based on X-ray and electron diffractions and high resolution electron microscopy, have revealed that these oxides can be represented by CaBa2Ca2Cu3O9-δ [Ca-1223-Ba] with a tetragonal subcell that has lattice constants α approximately 3.85 angstroms and c approximately 16.5 angstroms and is isostructural to Tl-1223-Ba with the Tl sites occupied mainly by Ca. These oxides have the same active block of [(CuO2)(Ca)(CuO2)(Ca)(CuO2)] but with cation mixing and substitution of Ca by Cu within the charge reservoir block [(BaO)(CaO)(BaO)]. This results in the observed variations in composition and superstructure but has only minor influence on Tc.

AB - A new family of C-free high-temperature superconducting oxides in the Ba-Ca-Cu-O system showing a Tc up to 107 K has been synthesized under high pressure. Structural analyses, based on X-ray and electron diffractions and high resolution electron microscopy, have revealed that these oxides can be represented by CaBa2Ca2Cu3O9-δ [Ca-1223-Ba] with a tetragonal subcell that has lattice constants α approximately 3.85 angstroms and c approximately 16.5 angstroms and is isostructural to Tl-1223-Ba with the Tl sites occupied mainly by Ca. These oxides have the same active block of [(CuO2)(Ca)(CuO2)(Ca)(CuO2)] but with cation mixing and substitution of Ca by Cu within the charge reservoir block [(BaO)(CaO)(BaO)]. This results in the observed variations in composition and superstructure but has only minor influence on Tc.

UR - http://www.scopus.com/inward/record.url?scp=0032626674&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032626674&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(99)00200-2

DO - 10.1016/S0921-4534(99)00200-2

M3 - Article

AN - SCOPUS:0032626674

SN - 0921-4534

VL - 315

SP - 227

EP - 234

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 3

ER -

Observation and identification of a 107 K superconducting family in the CaBa₂Ca₂Cu₃O_9-δ system

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this