The structures of the 126 K Ba2Ca2Cu3(CaxCuy)O 8+δ, the 116 K Ba2Ca3Cu4(CaxCuy)O 10+δ and their transformed products

Y. Y. Xue; Y. Y. Sun; Z. L. Du; I. Rusakova; K. Ross; N. L. Wu; Y. Cao; L. Gao; C. W. Chu

doi:10.1016/S0921-4534(97)00534-0

The structures of the 126 K Ba₂Ca₂Cu₃(Ca_xCu_y)O _8+δ, the 116 K Ba₂Ca₃Cu₄(Ca_xCu_y)O _10+δ and their transformed products

Y. Y. Xue, Y. Y. Sun, Z. L. Du, I. Rusakova, K. Ross, N. L. Wu, Y. Cao, L. Gao, C. W. Chu

Executive Vice President

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

2 Citations (Scopus)

Abstract

Two new superconducting Ba-Ca-Cu oxides were identified as Ba₂Ca₂Cu₃(Ca_xCu_y)O _8+δ and Ba₂Ca₃Cu₄(Ca_xCu_y)O _10+δ with T_c of 126 K and 116 K, respectively. The cations (Ca_xCu_y), 0.4≤x≤0.9 and 0≤v≤0.7, are inserted between two adjacent BaO layers to stabilize the structures and to adjust the Cu-valences. Both compounds show the body-centered symmetry, but with different lattice constants of (a,c) = (3.8, 28.2) and (3.8, 34.8) Å , respectively. These compounds are unstable against the incorporation of CO₂ and H₂O in open air. The transformed products (Ca_u/2Cu_v/2C_xH_y)₂Ba ₂Ca₂Cu₃O_8+δ and (Ca_u/2Cu_v/2C_xH_y)₂Ba ₂Ca₃Cu₄O_10+δ have an expanded c of 33.8 and 40.2 Å , and a lower T_c of 90 and 114 K, respectively. The structure models for these decay products are proposed.

Original language	English
Pages (from-to)	883-884
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	282-287
Issue number	PART 2
DOIs	https://doi.org/10.1016/S0921-4534(97)00534-0
Publication status	Published - 1997 Aug

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(97)00534-0

Cite this

@article{32d9f58032f245cdb719d996377bb41e,

title = "The structures of the 126 K Ba2Ca2Cu3(CaxCuy)O 8+δ, the 116 K Ba2Ca3Cu4(CaxCuy)O 10+δ and their transformed products",

abstract = "Two new superconducting Ba-Ca-Cu oxides were identified as Ba2Ca2Cu3(CaxCuy)O 8+δ and Ba2Ca3Cu4(CaxCuy)O 10+δ with Tc of 126 K and 116 K, respectively. The cations (CaxCuy), 0.4≤x≤0.9 and 0≤v≤0.7, are inserted between two adjacent BaO layers to stabilize the structures and to adjust the Cu-valences. Both compounds show the body-centered symmetry, but with different lattice constants of (a,c) = (3.8, 28.2) and (3.8, 34.8) {\AA} , respectively. These compounds are unstable against the incorporation of CO2 and H2O in open air. The transformed products (Cau/2Cuv/2CxHy)2Ba 2Ca2Cu3O8+δ and (Cau/2Cuv/2CxHy)2Ba 2Ca3Cu4O10+δ have an expanded c of 33.8 and 40.2 {\AA} , and a lower Tc of 90 and 114 K, respectively. The structure models for these decay products are proposed.",

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

note = "Funding Information: ·on leave from the National Taiwan Univenity, Taipei. This work is supported in part by NSF DMR 95-00625, EPRI RP-8066-04, TCSUH, T.L. Temple Foundation and the John J. and Rebecca Moores Endowment",

year = "1997",

month = aug,

doi = "10.1016/S0921-4534(97)00534-0",

language = "English",

volume = "282-287",

pages = "883--884",

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

issn = "0921-4534",

publisher = "Elsevier",

number = "PART 2",

}

TY - JOUR

T1 - The structures of the 126 K Ba2Ca2Cu3(CaxCuy)O 8+δ, the 116 K Ba2Ca3Cu4(CaxCuy)O 10+δ and their transformed products

AU - Xue, Y. Y.

AU - Sun, Y. Y.

AU - Du, Z. L.

AU - Rusakova, I.

AU - Ross, K.

AU - Wu, N. L.

AU - Cao, Y.

AU - Gao, L.

AU - Chu, C. W.

N1 - Funding Information: ·on leave from the National Taiwan Univenity, Taipei. This work is supported in part by NSF DMR 95-00625, EPRI RP-8066-04, TCSUH, T.L. Temple Foundation and the John J. and Rebecca Moores Endowment

PY - 1997/8

Y1 - 1997/8

N2 - Two new superconducting Ba-Ca-Cu oxides were identified as Ba2Ca2Cu3(CaxCuy)O 8+δ and Ba2Ca3Cu4(CaxCuy)O 10+δ with Tc of 126 K and 116 K, respectively. The cations (CaxCuy), 0.4≤x≤0.9 and 0≤v≤0.7, are inserted between two adjacent BaO layers to stabilize the structures and to adjust the Cu-valences. Both compounds show the body-centered symmetry, but with different lattice constants of (a,c) = (3.8, 28.2) and (3.8, 34.8) Å , respectively. These compounds are unstable against the incorporation of CO2 and H2O in open air. The transformed products (Cau/2Cuv/2CxHy)2Ba 2Ca2Cu3O8+δ and (Cau/2Cuv/2CxHy)2Ba 2Ca3Cu4O10+δ have an expanded c of 33.8 and 40.2 Å , and a lower Tc of 90 and 114 K, respectively. The structure models for these decay products are proposed.

AB - Two new superconducting Ba-Ca-Cu oxides were identified as Ba2Ca2Cu3(CaxCuy)O 8+δ and Ba2Ca3Cu4(CaxCuy)O 10+δ with Tc of 126 K and 116 K, respectively. The cations (CaxCuy), 0.4≤x≤0.9 and 0≤v≤0.7, are inserted between two adjacent BaO layers to stabilize the structures and to adjust the Cu-valences. Both compounds show the body-centered symmetry, but with different lattice constants of (a,c) = (3.8, 28.2) and (3.8, 34.8) Å , respectively. These compounds are unstable against the incorporation of CO2 and H2O in open air. The transformed products (Cau/2Cuv/2CxHy)2Ba 2Ca2Cu3O8+δ and (Cau/2Cuv/2CxHy)2Ba 2Ca3Cu4O10+δ have an expanded c of 33.8 and 40.2 Å , and a lower Tc of 90 and 114 K, respectively. The structure models for these decay products are proposed.

UR - http://www.scopus.com/inward/record.url?scp=0031208414&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031208414&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(97)00534-0

DO - 10.1016/S0921-4534(97)00534-0

M3 - Article

AN - SCOPUS:0031208414

SN - 0921-4534

VL - 282-287

SP - 883

EP - 884

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - PART 2

ER -

The structures of the 126 K Ba₂Ca₂Cu₃(Ca_xCu_y)O _8+δ, the 116 K Ba₂Ca₃Cu₄(Ca_xCu_y)O _10+δ and their transformed products

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this