Synthesis and structure of BaKFeO3: A new quaternary oxide with 1-D ferrate chains

James L. Delattre; Angelica M. Stacy

doi:10.1016/S0022-4596(03)00076-8

Synthesis and structure of BaKFeO₃: A new quaternary oxide with 1-D ferrate chains

James L. Delattre, Angelica M. Stacy

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Abstract

Amber-colored single crystals of the quaternary oxide BaKFeO₃ were synthesized from a mixture of Fe₂O₃, KOH and Ba(OH)₂ heated at 750°C for 5h then cooled slowly. The structure was determined by single-crystal X-ray diffraction (space group Cmca; a=5.804(1)Å, b=11.528(1)Å, c=12.776(1)Å; Z=8, R ₁=0.0376, wR₂=0.0996). The structure is comprised of [FeO₃^3-]^∞ chains of corner-sharing iron-oxo tetrahedra that are isolated from one another by interspersed Ba and K cations. The iron coordination environment is moderately distorted from perfect tetrahedral symmetry and the Fe-O-Fe bond angles are 152.8°. Magnetic susceptibility data show a pronounced zero-field cooling effect that suggests strong coupling from 5K to above room temperature.

Original language	English (US)
Pages (from-to)	261-264
Number of pages	4
Journal	Journal of Solid State Chemistry
Volume	172
Issue number	2
DOIs	https://doi.org/10.1016/S0022-4596(03)00076-8
State	Published - May 2003

All Science Journal Classification (ASJC) codes

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)00076-8

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title = "Synthesis and structure of BaKFeO3: A new quaternary oxide with 1-D ferrate chains",

abstract = "Amber-colored single crystals of the quaternary oxide BaKFeO3 were synthesized from a mixture of Fe2O3, KOH and Ba(OH)2 heated at 750°C for 5h then cooled slowly. The structure was determined by single-crystal X-ray diffraction (space group Cmca; a=5.804(1){\AA}, b=11.528(1){\AA}, c=12.776(1){\AA}; Z=8, R 1=0.0376, wR2=0.0996). The structure is comprised of [FeO33-]∞ chains of corner-sharing iron-oxo tetrahedra that are isolated from one another by interspersed Ba and K cations. The iron coordination environment is moderately distorted from perfect tetrahedral symmetry and the Fe-O-Fe bond angles are 152.8°. Magnetic susceptibility data show a pronounced zero-field cooling effect that suggests strong coupling from 5K to above room temperature.",

author = "Delattre, {James L.} and Stacy, {Angelica M.}",

year = "2003",

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doi = "10.1016/S0022-4596(03)00076-8",

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journal = "Journal of Solid State Chemistry",

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publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Synthesis and structure of BaKFeO3

T2 - A new quaternary oxide with 1-D ferrate chains

AU - Delattre, James L.

AU - Stacy, Angelica M.

PY - 2003/5

Y1 - 2003/5

N2 - Amber-colored single crystals of the quaternary oxide BaKFeO3 were synthesized from a mixture of Fe2O3, KOH and Ba(OH)2 heated at 750°C for 5h then cooled slowly. The structure was determined by single-crystal X-ray diffraction (space group Cmca; a=5.804(1)Å, b=11.528(1)Å, c=12.776(1)Å; Z=8, R 1=0.0376, wR2=0.0996). The structure is comprised of [FeO33-]∞ chains of corner-sharing iron-oxo tetrahedra that are isolated from one another by interspersed Ba and K cations. The iron coordination environment is moderately distorted from perfect tetrahedral symmetry and the Fe-O-Fe bond angles are 152.8°. Magnetic susceptibility data show a pronounced zero-field cooling effect that suggests strong coupling from 5K to above room temperature.

AB - Amber-colored single crystals of the quaternary oxide BaKFeO3 were synthesized from a mixture of Fe2O3, KOH and Ba(OH)2 heated at 750°C for 5h then cooled slowly. The structure was determined by single-crystal X-ray diffraction (space group Cmca; a=5.804(1)Å, b=11.528(1)Å, c=12.776(1)Å; Z=8, R 1=0.0376, wR2=0.0996). The structure is comprised of [FeO33-]∞ chains of corner-sharing iron-oxo tetrahedra that are isolated from one another by interspersed Ba and K cations. The iron coordination environment is moderately distorted from perfect tetrahedral symmetry and the Fe-O-Fe bond angles are 152.8°. Magnetic susceptibility data show a pronounced zero-field cooling effect that suggests strong coupling from 5K to above room temperature.

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Synthesis and structure of BaKFeO₃: A new quaternary oxide with 1-D ferrate chains

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