InCuO2.5 and ScCuO2.5: New oxidized copper delafossites with triangular lattices of Cu2+ cations

O. Garlea; P. Bordet; C. Darie; O. Isnard; R. Ballou

doi:10.1088/0953-8984/16/11/034

InCuO_2.5 and ScCuO_2.5: New oxidized copper delafossites with triangular lattices of Cu²⁺ cations

O. Garlea, P. Bordet, C. Darie, O. Isnard, R. Ballou

Direct Geometry

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Abstract

New oxidized delafossite compounds of composition InCuO_2.5 and ScCuO_2.5 are synthesized and their structures are characterized by means of x-ray and neutron powder diffraction. Oxygen intake is accompanied by a small increase of the unit cell, and a complex superstructure attributed to oxygen ordering appears. Average structure refinements show the presence of additional oxygen close to the centres of Cu triangles, and an average copper valence of +2. The two compounds appear to be isostructural. Magnetic measurements show a non-linear thermal increase of the inverse magnetic susceptibility up to some maximum, soon followed by a minimum around 280 K.

Original language	English
Pages (from-to)	S811-S816
Journal	Journal of Physics Condensed Matter
Volume	16
Issue number	11 SPEC. ISS.
DOIs	https://doi.org/10.1088/0953-8984/16/11/034
State	Published - Mar 24 2004

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title = "InCuO2.5 and ScCuO2.5: New oxidized copper delafossites with triangular lattices of Cu2+ cations",

abstract = "New oxidized delafossite compounds of composition InCuO2.5 and ScCuO2.5 are synthesized and their structures are characterized by means of x-ray and neutron powder diffraction. Oxygen intake is accompanied by a small increase of the unit cell, and a complex superstructure attributed to oxygen ordering appears. Average structure refinements show the presence of additional oxygen close to the centres of Cu triangles, and an average copper valence of +2. The two compounds appear to be isostructural. Magnetic measurements show a non-linear thermal increase of the inverse magnetic susceptibility up to some maximum, soon followed by a minimum around 280 K.",

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T1 - InCuO2.5 and ScCuO2.5

T2 - New oxidized copper delafossites with triangular lattices of Cu2+ cations

AU - Garlea, O.

AU - Bordet, P.

AU - Darie, C.

AU - Isnard, O.

AU - Ballou, R.

PY - 2004/3/24

Y1 - 2004/3/24

N2 - New oxidized delafossite compounds of composition InCuO2.5 and ScCuO2.5 are synthesized and their structures are characterized by means of x-ray and neutron powder diffraction. Oxygen intake is accompanied by a small increase of the unit cell, and a complex superstructure attributed to oxygen ordering appears. Average structure refinements show the presence of additional oxygen close to the centres of Cu triangles, and an average copper valence of +2. The two compounds appear to be isostructural. Magnetic measurements show a non-linear thermal increase of the inverse magnetic susceptibility up to some maximum, soon followed by a minimum around 280 K.

AB - New oxidized delafossite compounds of composition InCuO2.5 and ScCuO2.5 are synthesized and their structures are characterized by means of x-ray and neutron powder diffraction. Oxygen intake is accompanied by a small increase of the unit cell, and a complex superstructure attributed to oxygen ordering appears. Average structure refinements show the presence of additional oxygen close to the centres of Cu triangles, and an average copper valence of +2. The two compounds appear to be isostructural. Magnetic measurements show a non-linear thermal increase of the inverse magnetic susceptibility up to some maximum, soon followed by a minimum around 280 K.

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VL - 16

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JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 11 SPEC. ISS.

ER -

InCuO_2.5 and ScCuO_2.5: New oxidized copper delafossites with triangular lattices of Cu²⁺ cations

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