The structure and properties of Ba2YCu3O6

A. Santoro; S. Miraglia; F. Beech; S. A. Sunshine; D. W. Murphy; L. F. Schneemeyer; J. V. Waszczak

doi:10.1016/0025-5408(87)90100-0

The structure and properties of Ba₂YCu₃O₆

A. Santoro, S. Miraglia, F. Beech, S. A. Sunshine, D. W. Murphy, L. F. Schneemeyer, J. V. Waszczak

Chemistry and Biochemistry

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Abstract

The structure of Ba₂YCu₃O₆ has been determined by neutron diffraction powder profile analysis. The cell is tetragonal P4/mmm with a=3.8570(1) A ̊ and c=11.8194(3) A ̊. The cations are in a perovskite type arrangement, with Ba and Y ordered on the A site to give a cell tripled along c. The oxygens occupy only 2 3 of the perovskite anion sites and are ordered such that 1 3 of the Cu is two-fold coordinated and 2 3 is five-fold coordinated. This configuration can be derived from that of the superconductor Ba₂YCu₃O₇ by removing the oxygen atoms along the b axis at the ( 0,1 2,0) position. A pressed pellet exhibited semiconductivity with a band gap of 0.21eV from 125-300K. The compound is described as Ba₂YCu¹⁺Cu²⁺₂O₆.

Original language	English
Pages (from-to)	1007-1013
Number of pages	7
Journal	Materials Research Bulletin
Volume	22
Issue number	7
DOIs	https://doi.org/10.1016/0025-5408(87)90100-0
State	Published - Jul 1987

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title = "The structure and properties of Ba2YCu3O6",

abstract = "The structure of Ba2YCu3O6 has been determined by neutron diffraction powder profile analysis. The cell is tetragonal P4/mmm with a=3.8570(1) A ̊ and c=11.8194(3) A ̊. The cations are in a perovskite type arrangement, with Ba and Y ordered on the A site to give a cell tripled along c. The oxygens occupy only 2 3 of the perovskite anion sites and are ordered such that 1 3 of the Cu is two-fold coordinated and 2 3 is five-fold coordinated. This configuration can be derived from that of the superconductor Ba2YCu3O7 by removing the oxygen atoms along the b axis at the ( 0,1 2,0) position. A pressed pellet exhibited semiconductivity with a band gap of 0.21eV from 125-300K. The compound is described as Ba2YCu1+Cu2+2O6.",

author = "A. Santoro and S. Miraglia and F. Beech and Sunshine, {S. A.} and Murphy, {D. W.} and Schneemeyer, {L. F.} and Waszczak, {J. V.}",

year = "1987",

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doi = "10.1016/0025-5408(87)90100-0",

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T1 - The structure and properties of Ba2YCu3O6

AU - Santoro, A.

AU - Miraglia, S.

AU - Beech, F.

AU - Sunshine, S. A.

AU - Murphy, D. W.

AU - Schneemeyer, L. F.

AU - Waszczak, J. V.

PY - 1987/7

Y1 - 1987/7

N2 - The structure of Ba2YCu3O6 has been determined by neutron diffraction powder profile analysis. The cell is tetragonal P4/mmm with a=3.8570(1) A ̊ and c=11.8194(3) A ̊. The cations are in a perovskite type arrangement, with Ba and Y ordered on the A site to give a cell tripled along c. The oxygens occupy only 2 3 of the perovskite anion sites and are ordered such that 1 3 of the Cu is two-fold coordinated and 2 3 is five-fold coordinated. This configuration can be derived from that of the superconductor Ba2YCu3O7 by removing the oxygen atoms along the b axis at the ( 0,1 2,0) position. A pressed pellet exhibited semiconductivity with a band gap of 0.21eV from 125-300K. The compound is described as Ba2YCu1+Cu2+2O6.

AB - The structure of Ba2YCu3O6 has been determined by neutron diffraction powder profile analysis. The cell is tetragonal P4/mmm with a=3.8570(1) A ̊ and c=11.8194(3) A ̊. The cations are in a perovskite type arrangement, with Ba and Y ordered on the A site to give a cell tripled along c. The oxygens occupy only 2 3 of the perovskite anion sites and are ordered such that 1 3 of the Cu is two-fold coordinated and 2 3 is five-fold coordinated. This configuration can be derived from that of the superconductor Ba2YCu3O7 by removing the oxygen atoms along the b axis at the ( 0,1 2,0) position. A pressed pellet exhibited semiconductivity with a band gap of 0.21eV from 125-300K. The compound is described as Ba2YCu1+Cu2+2O6.

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U2 - 10.1016/0025-5408(87)90100-0

DO - 10.1016/0025-5408(87)90100-0

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SN - 0025-5408

VL - 22

SP - 1007

EP - 1013

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 7

ER -

The structure and properties of Ba₂YCu₃O₆

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