Ordered arrangement of carbon and copper atoms in (C0.4Cu0.6)Sr2(Y0.86Sr0.14)Cu2O7

N. Ohnishi; Y. Miyazaki; H. Yamane; T. Kajitani; T. Hirai; K. Hiraga

doi:10.1016/0921-4534(93)90437-U

Ordered arrangement of carbon and copper atoms in (C_0.4Cu_0.6)Sr₂(Y_0.86Sr_0.14)Cu₂O₇

N. Ohnishi, Y. Miyazaki, H. Yamane, T. Kajitani, T. Hirai, K. Hiraga

ENG - Applied Physics

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

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Abstract

An ordered arrangement of carbon and copper atoms in the new compound (C_0.4Cu_0.6)Sr₂(Y_0.86Sr_0.14)Cu₂O₇ was investigated by means of electron diffraction and high-resolution electron microscopy. Electron diffraction patters show diffuse superlattice reflections corresponding to a compositional modulation with periods in the range from 2a to 3a along the a-axis and 2c along the c-axis. From observed high-resolution images, it is concluded that the modulated arrangement of carbon and copper atoms is responsible for the diffuse superlattice reflections. It is proposed that this modulated structure consists of two kinds of superstructure units having dimensions of 2a×b×2c and 3a×b×2c. There are two different atomic arrangements in the 3a×b×2c units.

Original language	English
Pages (from-to)	175-184
Number of pages	10
Journal	Physica C: Superconductivity and its applications
Volume	207
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(93)90437-U
Publication status	Published - 1993 Mar 1

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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AU - Ohnishi, N.

AU - Miyazaki, Y.

AU - Yamane, H.

AU - Kajitani, T.

AU - Hirai, T.

AU - Hiraga, K.

PY - 1993/3/1

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AB - An ordered arrangement of carbon and copper atoms in the new compound (C0.4Cu0.6)Sr2(Y0.86Sr0.14)Cu2O7 was investigated by means of electron diffraction and high-resolution electron microscopy. Electron diffraction patters show diffuse superlattice reflections corresponding to a compositional modulation with periods in the range from 2a to 3a along the a-axis and 2c along the c-axis. From observed high-resolution images, it is concluded that the modulated arrangement of carbon and copper atoms is responsible for the diffuse superlattice reflections. It is proposed that this modulated structure consists of two kinds of superstructure units having dimensions of 2a×b×2c and 3a×b×2c. There are two different atomic arrangements in the 3a×b×2c units.

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Ordered arrangement of carbon and copper atoms in (C_0.4Cu_0.6)Sr₂(Y_0.86Sr_0.14)Cu₂O₇

Abstract

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