Effects of extra oxygen on the physical properties in the Pb3201 phase of (Pb2Cu)Sr0.9La1.1CuO6+δ prepared by the polymerized complex method

Masatsune Kato; Toyoo Miyajima; Atsushi Sakuma; Takashi Noji; Yoji Koike; Akihiko Fujiwara; Yoshitami Saito

doi:10.1016/0921-4534(95)00062-3

Effects of extra oxygen on the physical properties in the Pb3201 phase of (Pb₂Cu)Sr_0.9La_1.1CuO_6+δ prepared by the polymerized complex method

Masatsune Kato, Toyoo Miyajima, Atsushi Sakuma, Takashi Noji, Yoji Koike, Akihiko Fujiwara, Yoshitami Saito

ENG - Applied Physics

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

4 Citations (Scopus)

Abstract

We have investigated the effects of extra oxygen on the crystal structure, transport properties and superconductivity in the Pb3201 phase of (Pb₂Cu)Sr₉La_1.1CuO_6+δ prepared by the polymerized complex method. A structural phase transition from orthorhombic to tetragonal phase is observed with increasing δ. The sample is orthorhombic for 0 ≲ δ ≲ 0.4, tetragonal for 1.7 ≲ δ ≲ 2 and a mixture of the orthorhombic and tetragonal phasse for 0.4 ≲ δ ≲ 1.7. In the orthorhombic phase of δ ≲ 0.3-0.4, T_c increases with increasing δ, owing to the increase of holes in the CuO₂ sheets from the extra oxygen. In the tetragonal phase, on the other hand, the superconductivity disappears on account of the small hole concentration in the CuO₂ sheets, owing to the increase of the Pb valence from +2 to +4.

Original language	English
Pages (from-to)	263-270
Number of pages	8
Journal	Physica C: Superconductivity and its applications
Volume	244
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(95)00062-3
Publication status	Published - 1995 Mar 20

ASJC Scopus subject areas

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

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Effects of extra oxygen on the physical properties in the Pb3201 phase of (Pb₂Cu)Sr_0.9La_1.1CuO_6+δ prepared by the polymerized complex method. / Kato, Masatsune; Miyajima, Toyoo; Sakuma, Atsushi; Noji, Takashi; Koike, Yoji; Fujiwara, Akihiko; Saito, Yoshitami.

In: Physica C: Superconductivity and its applications, Vol. 244, No. 3-4, 20.03.1995, p. 263-270.

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

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title = "Effects of extra oxygen on the physical properties in the Pb3201 phase of (Pb2Cu)Sr0.9La1.1CuO6+δ prepared by the polymerized complex method",

abstract = "We have investigated the effects of extra oxygen on the crystal structure, transport properties and superconductivity in the Pb3201 phase of (Pb2Cu)Sr9La1.1CuO6+δ prepared by the polymerized complex method. A structural phase transition from orthorhombic to tetragonal phase is observed with increasing δ. The sample is orthorhombic for 0 ≲ δ ≲ 0.4, tetragonal for 1.7 ≲ δ ≲ 2 and a mixture of the orthorhombic and tetragonal phasse for 0.4 ≲ δ ≲ 1.7. In the orthorhombic phase of δ ≲ 0.3-0.4, Tc increases with increasing δ, owing to the increase of holes in the CuO2 sheets from the extra oxygen. In the tetragonal phase, on the other hand, the superconductivity disappears on account of the small hole concentration in the CuO2 sheets, owing to the increase of the Pb valence from +2 to +4.",

author = "Masatsune Kato and Toyoo Miyajima and Atsushi Sakuma and Takashi Noji and Yoji Koike and Akihiko Fujiwara and Yoshitami Saito",

note = "Funding Information: The authors would like to thank M. Kakihana, Tokyo Institute of Technology, for his advice in the sample preparation by the polymerized complex method. This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan. One of the authors (MK) was supported by a Grant-in-Aid from Yazaki Memorial Foundation for Science and Technology. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

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AU - Kato, Masatsune

AU - Miyajima, Toyoo

AU - Sakuma, Atsushi

AU - Noji, Takashi

AU - Koike, Yoji

AU - Fujiwara, Akihiko

AU - Saito, Yoshitami

N1 - Funding Information: The authors would like to thank M. Kakihana, Tokyo Institute of Technology, for his advice in the sample preparation by the polymerized complex method. This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan. One of the authors (MK) was supported by a Grant-in-Aid from Yazaki Memorial Foundation for Science and Technology. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 1995/3/20

Y1 - 1995/3/20

N2 - We have investigated the effects of extra oxygen on the crystal structure, transport properties and superconductivity in the Pb3201 phase of (Pb2Cu)Sr9La1.1CuO6+δ prepared by the polymerized complex method. A structural phase transition from orthorhombic to tetragonal phase is observed with increasing δ. The sample is orthorhombic for 0 ≲ δ ≲ 0.4, tetragonal for 1.7 ≲ δ ≲ 2 and a mixture of the orthorhombic and tetragonal phasse for 0.4 ≲ δ ≲ 1.7. In the orthorhombic phase of δ ≲ 0.3-0.4, Tc increases with increasing δ, owing to the increase of holes in the CuO2 sheets from the extra oxygen. In the tetragonal phase, on the other hand, the superconductivity disappears on account of the small hole concentration in the CuO2 sheets, owing to the increase of the Pb valence from +2 to +4.

AB - We have investigated the effects of extra oxygen on the crystal structure, transport properties and superconductivity in the Pb3201 phase of (Pb2Cu)Sr9La1.1CuO6+δ prepared by the polymerized complex method. A structural phase transition from orthorhombic to tetragonal phase is observed with increasing δ. The sample is orthorhombic for 0 ≲ δ ≲ 0.4, tetragonal for 1.7 ≲ δ ≲ 2 and a mixture of the orthorhombic and tetragonal phasse for 0.4 ≲ δ ≲ 1.7. In the orthorhombic phase of δ ≲ 0.3-0.4, Tc increases with increasing δ, owing to the increase of holes in the CuO2 sheets from the extra oxygen. In the tetragonal phase, on the other hand, the superconductivity disappears on account of the small hole concentration in the CuO2 sheets, owing to the increase of the Pb valence from +2 to +4.

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