Proper composition for superconductivity in Pb(Ba, Sr)2(Y, Ca)Cu3O7

Ayako Yamamoto, Masayasu Nagoshi, Yasuhiko Syono

研究成果: Article

13 引用 (Scopus)

抄録

Superconductivity and composition analysis of PbBaSr(Y, Ca)Cu3Oy with fixed ratio of Sr/Ba = 1 were studied. Synthesis condition and superconductivity of Pb(Ba, Sr)2(Y, Ca)Cu3Oy with various ratio of Sr/Ba and Ca/Y were also studied. It was found that Tc increased with increasing Ca concentration, and that Sr-rich specimens allowed to contain more Ca. PbBa0.8Sr1.2Y0.6Ca0.4Cu3O7 showed superconductivity with zero-resistance temperature of 42 K, which was higher than PbBaSrY0.7Ca0.3Cu3O7 with maximum Ca content for Sr/Ba = 1. Decrease in averaged ionic radii of Ba and Sr in Sr-rich compositions would be favorable for the contraction of Cu-O bonds by hole-doping via Ca substitution for Y.

元の言語English
ページ(範囲)437-442
ページ数6
ジャーナルPhysica C: Superconductivity and its Applications
170
発行部数5-6
DOI
出版物ステータスPublished - 1990 10 1
外部発表Yes

Fingerprint

Superconductivity
superconductivity
Chemical analysis
contraction
Substitution reactions
Doping (additives)
substitutes
radii
synthesis
Temperature
temperature

ASJC Scopus subject areas

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

これを引用

Proper composition for superconductivity in Pb(Ba, Sr)2(Y, Ca)Cu3O7 . / Yamamoto, Ayako; Nagoshi, Masayasu; Syono, Yasuhiko.

:: Physica C: Superconductivity and its Applications, 巻 170, 番号 5-6, 01.10.1990, p. 437-442.

研究成果: Article

Yamamoto, Ayako ; Nagoshi, Masayasu ; Syono, Yasuhiko. / Proper composition for superconductivity in Pb(Ba, Sr)2(Y, Ca)Cu3O7 :: Physica C: Superconductivity and its Applications. 1990 ; 巻 170, 番号 5-6. pp. 437-442.
@article{45971db6f7bb4a84ba69f8db0477bd7c,
title = "Proper composition for superconductivity in Pb(Ba, Sr)2(Y, Ca)Cu3O7",
abstract = "Superconductivity and composition analysis of PbBaSr(Y, Ca)Cu3Oy with fixed ratio of Sr/Ba = 1 were studied. Synthesis condition and superconductivity of Pb(Ba, Sr)2(Y, Ca)Cu3Oy with various ratio of Sr/Ba and Ca/Y were also studied. It was found that Tc increased with increasing Ca concentration, and that Sr-rich specimens allowed to contain more Ca. PbBa0.8Sr1.2Y0.6Ca0.4Cu3O7 showed superconductivity with zero-resistance temperature of 42 K, which was higher than PbBaSrY0.7Ca0.3Cu3O7 with maximum Ca content for Sr/Ba = 1. Decrease in averaged ionic radii of Ba and Sr in Sr-rich compositions would be favorable for the contraction of Cu-O bonds by hole-doping via Ca substitution for Y.",
author = "Ayako Yamamoto and Masayasu Nagoshi and Yasuhiko Syono",
year = "1990",
month = "10",
day = "1",
doi = "10.1016/0921-4534(90)90013-5",
language = "English",
volume = "170",
pages = "437--442",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "5-6",

}

TY - JOUR

T1 - Proper composition for superconductivity in Pb(Ba, Sr)2(Y, Ca)Cu3O7

AU - Yamamoto, Ayako

AU - Nagoshi, Masayasu

AU - Syono, Yasuhiko

PY - 1990/10/1

Y1 - 1990/10/1

N2 - Superconductivity and composition analysis of PbBaSr(Y, Ca)Cu3Oy with fixed ratio of Sr/Ba = 1 were studied. Synthesis condition and superconductivity of Pb(Ba, Sr)2(Y, Ca)Cu3Oy with various ratio of Sr/Ba and Ca/Y were also studied. It was found that Tc increased with increasing Ca concentration, and that Sr-rich specimens allowed to contain more Ca. PbBa0.8Sr1.2Y0.6Ca0.4Cu3O7 showed superconductivity with zero-resistance temperature of 42 K, which was higher than PbBaSrY0.7Ca0.3Cu3O7 with maximum Ca content for Sr/Ba = 1. Decrease in averaged ionic radii of Ba and Sr in Sr-rich compositions would be favorable for the contraction of Cu-O bonds by hole-doping via Ca substitution for Y.

AB - Superconductivity and composition analysis of PbBaSr(Y, Ca)Cu3Oy with fixed ratio of Sr/Ba = 1 were studied. Synthesis condition and superconductivity of Pb(Ba, Sr)2(Y, Ca)Cu3Oy with various ratio of Sr/Ba and Ca/Y were also studied. It was found that Tc increased with increasing Ca concentration, and that Sr-rich specimens allowed to contain more Ca. PbBa0.8Sr1.2Y0.6Ca0.4Cu3O7 showed superconductivity with zero-resistance temperature of 42 K, which was higher than PbBaSrY0.7Ca0.3Cu3O7 with maximum Ca content for Sr/Ba = 1. Decrease in averaged ionic radii of Ba and Sr in Sr-rich compositions would be favorable for the contraction of Cu-O bonds by hole-doping via Ca substitution for Y.

UR - http://www.scopus.com/inward/record.url?scp=0025508755&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025508755&partnerID=8YFLogxK

U2 - 10.1016/0921-4534(90)90013-5

DO - 10.1016/0921-4534(90)90013-5

M3 - Article

AN - SCOPUS:0025508755

VL - 170

SP - 437

EP - 442

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 5-6

ER -