Synthesis, crystal structure, and optical properties of CeMn 0.5OSe

Ismail Ijjaali; Kwasi Mitchell; Christy L. Haynes; Adam D. McFarland; Richard P. Van Duyne; James A. Ibers

doi:10.1016/S0022-4596(03)00385-2

Synthesis, crystal structure, and optical properties of CeMn _0.5OSe

Ismail Ijjaali, Kwasi Mitchell, Christy L. Haynes, Adam D. McFarland, Richard P. Van Duyne, James A. Ibers^*

^*Corresponding author for this work

Chemistry

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

28 Scopus citations

Abstract

The new quaternary selenide CeMn_0.5OSe has been synthesized by the reaction of Ce, Mn, Se, and SeO₂ at 1223K. This compound crystallizes in space group P4/nmm of the tetragonal system with two formula units in a cell of dimensions at 153K of a=4.0260(7)Å, c=9.107(2)Å. CeMn_0.5OSe has the LaAgOS structure type. It is built from [CeO] fluorite-like layers where Ce₄O tetrahedra share Ce-Ce edges that alternate with [MnSe] anti-fluorite like layers along [001]. An optical band gap of 2.01eV has been derived from absorption measurements on the (100) crystal face of a CeMn_0.5OSe single crystal.

Original language	English (US)
Pages (from-to)	170-174
Number of pages	5
Journal	Journal of Solid State Chemistry
Volume	176
Issue number	1
DOIs	https://doi.org/10.1016/S0022-4596(03)00385-2
State	Published - Nov 15 2003

Keywords

Band gap
Cerium manganese oxyselenide
Synthesis and X-ray structure

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/S0022-4596(03)00385-2

Cite this

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title = "Synthesis, crystal structure, and optical properties of CeMn 0.5OSe",

abstract = "The new quaternary selenide CeMn0.5OSe has been synthesized by the reaction of Ce, Mn, Se, and SeO2 at 1223K. This compound crystallizes in space group P4/nmm of the tetragonal system with two formula units in a cell of dimensions at 153K of a=4.0260(7){\AA}, c=9.107(2){\AA}. CeMn0.5OSe has the LaAgOS structure type. It is built from [CeO] fluorite-like layers where Ce4O tetrahedra share Ce-Ce edges that alternate with [MnSe] anti-fluorite like layers along [001]. An optical band gap of 2.01eV has been derived from absorption measurements on the (100) crystal face of a CeMn0.5OSe single crystal.",

keywords = "Band gap, Cerium manganese oxyselenide, Synthesis and X-ray structure",

author = "Ismail Ijjaali and Kwasi Mitchell and Haynes, {Christy L.} and McFarland, {Adam D.} and {Van Duyne}, {Richard P.} and Ibers, {James A.}",

note = "Funding Information: This research was supported by the US National Science Foundation under Grant DMR00-96676 (J.A.I), a Ford Predoctoral Fellowship to K.M., and a Northwestern University Presidential Fellowship to C.L.H. Use was made of the MRL Central Facilities supported by the National Science Foundation at the Materials Research Center of Northwestern University under Grant No. DMR00-76097. ",

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AU - Ijjaali, Ismail

AU - Mitchell, Kwasi

AU - Haynes, Christy L.

AU - McFarland, Adam D.

AU - Van Duyne, Richard P.

AU - Ibers, James A.

N1 - Funding Information: This research was supported by the US National Science Foundation under Grant DMR00-96676 (J.A.I), a Ford Predoctoral Fellowship to K.M., and a Northwestern University Presidential Fellowship to C.L.H. Use was made of the MRL Central Facilities supported by the National Science Foundation at the Materials Research Center of Northwestern University under Grant No. DMR00-76097.

PY - 2003/11/15

Y1 - 2003/11/15

N2 - The new quaternary selenide CeMn0.5OSe has been synthesized by the reaction of Ce, Mn, Se, and SeO2 at 1223K. This compound crystallizes in space group P4/nmm of the tetragonal system with two formula units in a cell of dimensions at 153K of a=4.0260(7)Å, c=9.107(2)Å. CeMn0.5OSe has the LaAgOS structure type. It is built from [CeO] fluorite-like layers where Ce4O tetrahedra share Ce-Ce edges that alternate with [MnSe] anti-fluorite like layers along [001]. An optical band gap of 2.01eV has been derived from absorption measurements on the (100) crystal face of a CeMn0.5OSe single crystal.

AB - The new quaternary selenide CeMn0.5OSe has been synthesized by the reaction of Ce, Mn, Se, and SeO2 at 1223K. This compound crystallizes in space group P4/nmm of the tetragonal system with two formula units in a cell of dimensions at 153K of a=4.0260(7)Å, c=9.107(2)Å. CeMn0.5OSe has the LaAgOS structure type. It is built from [CeO] fluorite-like layers where Ce4O tetrahedra share Ce-Ce edges that alternate with [MnSe] anti-fluorite like layers along [001]. An optical band gap of 2.01eV has been derived from absorption measurements on the (100) crystal face of a CeMn0.5OSe single crystal.

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KW - Synthesis and X-ray structure

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