Superconductivity and crystal structure of Pb(Ba,Sr)2(Ln,Ca)Cu3Oy and Pb(Ba,Sr)2(Ln,Ce)2Cu3Oy(Ln: lanthanoid) with (Pb,Cu) double layers

Ayako Tokiwa; Yasuhiko Syono; Takeo Oku; Masayasu Nagoshi

doi:10.1016/0921-4534(91)92112-O

Superconductivity and crystal structure of Pb(Ba,Sr)₂(Ln,Ca)Cu₃O_y and Pb(Ba,Sr)₂(Ln,Ce)₂Cu₃O_y(Ln: lanthanoid) with (Pb,Cu) double layers

Ayako Tokiwa, Yasuhiko Syono, Takeo Oku, Masayasu Nagoshi

国際理工学専攻

研究成果: Article

3 引用（Scopus）

抜粋

Pb(Ba,Sr)₂(Ln,Ca)Cu₃O_y (Pb2212, y=7.0-8.4) and Pb(Ba,Sr)₂(Ln,Ce)₂Cu₃O_y (Pb2222, y=9.0-10.4) were synthesized, and crystal structure, phase transition and superconductivity were studied. The lanthanoid contraction was clearly observed in a relationship of 4f-electron number of Ln³⁺ versus cell volume of Pb2212, consistent with constant oxygen content for all of the lanthanoid substitutions. Transition temperature from oxygen rich phase to poor one was almost constant to be 580°C, in contrast to variation of the ortho-tetra transition temperature in Ba₂LnCu₃O_y.

元の言語	English
ページ（範囲）	619-620
ページ数	2
ジャーナル	Physica C: Superconductivity and its applications
巻	185-189
発行部数	PART 1
DOI	https://doi.org/10.1016/0921-4534(91)92112-O
出版物ステータス	Published - 1991 12 1

フィンガープリント

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

Tokiwa, A., Syono, Y., Oku, T., & Nagoshi, M. (1991). Superconductivity and crystal structure of Pb(Ba,Sr)₂(Ln,Ca)Cu₃O_y and Pb(Ba,Sr)₂(Ln,Ce)₂Cu₃O_y(Ln: lanthanoid) with (Pb,Cu) double layers. Physica C: Superconductivity and its applications, 185-189(PART 1), 619-620. https://doi.org/10.1016/0921-4534(91)92112-O

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abstract = "Pb(Ba,Sr)2(Ln,Ca)Cu3Oy (Pb2212, y=7.0-8.4) and Pb(Ba,Sr)2(Ln,Ce)2Cu3Oy (Pb2222, y=9.0-10.4) were synthesized, and crystal structure, phase transition and superconductivity were studied. The lanthanoid contraction was clearly observed in a relationship of 4f-electron number of Ln3+ versus cell volume of Pb2212, consistent with constant oxygen content for all of the lanthanoid substitutions. Transition temperature from oxygen rich phase to poor one was almost constant to be 580°C, in contrast to variation of the ortho-tetra transition temperature in Ba2LnCu3Oy.",

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T1 - Superconductivity and crystal structure of Pb(Ba,Sr)2(Ln,Ca)Cu3Oy and Pb(Ba,Sr)2(Ln,Ce)2Cu3Oy(Ln

T2 - lanthanoid) with (Pb,Cu) double layers

AU - Tokiwa, Ayako

AU - Syono, Yasuhiko

AU - Oku, Takeo

AU - Nagoshi, Masayasu

PY - 1991/12/1

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N2 - Pb(Ba,Sr)2(Ln,Ca)Cu3Oy (Pb2212, y=7.0-8.4) and Pb(Ba,Sr)2(Ln,Ce)2Cu3Oy (Pb2222, y=9.0-10.4) were synthesized, and crystal structure, phase transition and superconductivity were studied. The lanthanoid contraction was clearly observed in a relationship of 4f-electron number of Ln3+ versus cell volume of Pb2212, consistent with constant oxygen content for all of the lanthanoid substitutions. Transition temperature from oxygen rich phase to poor one was almost constant to be 580°C, in contrast to variation of the ortho-tetra transition temperature in Ba2LnCu3Oy.

AB - Pb(Ba,Sr)2(Ln,Ca)Cu3Oy (Pb2212, y=7.0-8.4) and Pb(Ba,Sr)2(Ln,Ce)2Cu3Oy (Pb2222, y=9.0-10.4) were synthesized, and crystal structure, phase transition and superconductivity were studied. The lanthanoid contraction was clearly observed in a relationship of 4f-electron number of Ln3+ versus cell volume of Pb2212, consistent with constant oxygen content for all of the lanthanoid substitutions. Transition temperature from oxygen rich phase to poor one was almost constant to be 580°C, in contrast to variation of the ortho-tetra transition temperature in Ba2LnCu3Oy.

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文献にアクセス

10.1016/0921-4534(91)92112-O