The crystal structure of (C0.4Cu0.6)Sr2(Y0.86Sr0.14)Cu2O7

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

doi:10.1016/0921-4534(92)90258-E

The crystal structure of (C_0.4Cu_0.6)Sr₂(Y_0.86Sr_0.14)Cu₂O₇

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

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

109 Citations (Scopus)

Abstract

The crystal structure of a new compound, (C_0.4Cu_0.6)Sr₂(Y_0.86Sr_0.14)Cu₂O₇, is derived from the structure of YBa₂Cu₃O₇. Forty percent of CuO chains in the YBa₂Cu₃O₇ structure are replaced by CO₃ groups. This new compound has a superstructure along the a-axis and the c-axis. Diffuse superlattice reflections having periods of a^*/2-a^*/3 and c^*/2 were observed in electron diffraction patterns. Locally ordered distributions of C and Cu atoms were seen high-resolution images taken by transmission electron microscopy with an incident beam parallel to [010]. The basic structure of this superstructure was determined by neutron powder diffraction, assuming orthorhombic symmetry with the space group, Pmmm (lattice constants: a=3.8278(2), b=3.8506(2) and c=11.1854(5) A ̊).

Original language	English
Pages (from-to)	7-13
Number of pages	7
Journal	Physica C: Superconductivity and its applications
Volume	198
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(92)90258-E
Publication status	Published - 1992 Jul 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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title = "The crystal structure of (C0.4Cu0.6)Sr2(Y0.86Sr0.14)Cu2O7",

abstract = "The crystal structure of a new compound, (C0.4Cu0.6)Sr2(Y0.86Sr0.14)Cu2O7, is derived from the structure of YBa2Cu3O7. Forty percent of CuO chains in the YBa2Cu3O7 structure are replaced by CO3 groups. This new compound has a superstructure along the a-axis and the c-axis. Diffuse superlattice reflections having periods of a*/2-a*/3 and c*/2 were observed in electron diffraction patterns. Locally ordered distributions of C and Cu atoms were seen high-resolution images taken by transmission electron microscopy with an incident beam parallel to [010]. The basic structure of this superstructure was determined by neutron powder diffraction, assuming orthorhombic symmetry with the space group, Pmmm (lattice constants: a=3.8278(2), b=3.8506(2) and c=11.1854(5) A ̊).",

author = "Y. Miyazaki and H. Yamane and N. Ohnishi and T. Kajitani and K. Hiraga and Y. Morii and S. Funahashi and T. Hirai",

year = "1992",

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AU - Miyazaki, Y.

AU - Yamane, H.

AU - Ohnishi, N.

AU - Kajitani, T.

AU - Hiraga, K.

AU - Morii, Y.

AU - Funahashi, S.

AU - Hirai, T.

PY - 1992/7/20

Y1 - 1992/7/20

N2 - The crystal structure of a new compound, (C0.4Cu0.6)Sr2(Y0.86Sr0.14)Cu2O7, is derived from the structure of YBa2Cu3O7. Forty percent of CuO chains in the YBa2Cu3O7 structure are replaced by CO3 groups. This new compound has a superstructure along the a-axis and the c-axis. Diffuse superlattice reflections having periods of a*/2-a*/3 and c*/2 were observed in electron diffraction patterns. Locally ordered distributions of C and Cu atoms were seen high-resolution images taken by transmission electron microscopy with an incident beam parallel to [010]. The basic structure of this superstructure was determined by neutron powder diffraction, assuming orthorhombic symmetry with the space group, Pmmm (lattice constants: a=3.8278(2), b=3.8506(2) and c=11.1854(5) A ̊).

AB - The crystal structure of a new compound, (C0.4Cu0.6)Sr2(Y0.86Sr0.14)Cu2O7, is derived from the structure of YBa2Cu3O7. Forty percent of CuO chains in the YBa2Cu3O7 structure are replaced by CO3 groups. This new compound has a superstructure along the a-axis and the c-axis. Diffuse superlattice reflections having periods of a*/2-a*/3 and c*/2 were observed in electron diffraction patterns. Locally ordered distributions of C and Cu atoms were seen high-resolution images taken by transmission electron microscopy with an incident beam parallel to [010]. The basic structure of this superstructure was determined by neutron powder diffraction, assuming orthorhombic symmetry with the space group, Pmmm (lattice constants: a=3.8278(2), b=3.8506(2) and c=11.1854(5) A ̊).

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