Preparation of perovskite-type oxides by the thermal decomposition of heteronuclear complexes, Ln[FexCo1-x(CN)6]·4H 2O(Ln=Pr-Yb)

Masatomi Sakamoto; Patrizia Nunziante; Enrico Traversa; Shigenori Matsushima; Masanari Miwa; Hiromichi Aono; Yoshihiko Sadaoka

doi:10.2109/jcersj.105.963

Preparation of perovskite-type oxides by the thermal decomposition of heteronuclear complexes, Ln[Fe_xCo_1-x(CN)₆]·4H ₂O(Ln=Pr-Yb)

Masatomi Sakamoto^*, Patrizia Nunziante, Enrico Traversa, Shigenori Matsushima, Masanari Miwa, Hiromichi Aono, Yoshihiko Sadaoka

^*Corresponding author for this work

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

31 Scopus citations

Abstract

Heteronuclear complexes of Ln[Fe_xCo_1-x(CN)₆]·4H ₂O(Ln=Pr-Yb) were synthesized and their thermal decomposition products were investigated. Thermal decomposition of the complexes results in the formation of perovskite-type oxides for Ln=Pr-Gd even at 800°C. The lattice parameters, a-, b- and c-lattice constants (crystal system: orthorhombic) increase linearly with the ratio of Fe/Co for the perovskite-type oxide. For Ln=Dy through Yb, the Ln₂O₃ phase is observed as the major product for x=0, but its content decreased with an increase in the Fe content; however, a single phase of the perovskite-type oxide was not formed for x=1. The perovskite-type structure for the Fe systems is easier to form compared with the Co systems. We clarified that the formation of the perovskite-type oxide is mainly affected by the ionic radius of the Ln³⁺ ion and the T³⁺ ion (T = Fe or Co).

Original language	English (US)
Pages (from-to)	963-969
Number of pages	7
Journal	Journal of the Ceramic Society of Japan
Volume	105
Issue number	11
DOIs	https://doi.org/10.2109/jcersj.105.963
State	Published - Nov 1997
Externally published	Yes

Keywords

Heteronuclear complexes
Hexacyano complexes
LnCoO
LnFeO
Perovskite-type oxides
Rare-earth cobalticyanides
Rare-earth ferricyanides
Thermal decomposition

ASJC Scopus subject areas

Ceramics and Composites
General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.2109/jcersj.105.963

Cite this

@article{85838c638d674b88880df9736e0d189e,

title = "Preparation of perovskite-type oxides by the thermal decomposition of heteronuclear complexes, Ln[FexCo1-x(CN)6]·4H 2O(Ln=Pr-Yb)",

abstract = "Heteronuclear complexes of Ln[FexCo1-x(CN)6]·4H 2O(Ln=Pr-Yb) were synthesized and their thermal decomposition products were investigated. Thermal decomposition of the complexes results in the formation of perovskite-type oxides for Ln=Pr-Gd even at 800°C. The lattice parameters, a-, b- and c-lattice constants (crystal system: orthorhombic) increase linearly with the ratio of Fe/Co for the perovskite-type oxide. For Ln=Dy through Yb, the Ln2O3 phase is observed as the major product for x=0, but its content decreased with an increase in the Fe content; however, a single phase of the perovskite-type oxide was not formed for x=1. The perovskite-type structure for the Fe systems is easier to form compared with the Co systems. We clarified that the formation of the perovskite-type oxide is mainly affected by the ionic radius of the Ln3+ ion and the T3+ ion (T = Fe or Co).",

keywords = "Heteronuclear complexes, Hexacyano complexes, LnCoO, LnFeO, Perovskite-type oxides, Rare-earth cobalticyanides, Rare-earth ferricyanides, Thermal decomposition",

author = "Masatomi Sakamoto and Patrizia Nunziante and Enrico Traversa and Shigenori Matsushima and Masanari Miwa and Hiromichi Aono and Yoshihiko Sadaoka",

year = "1997",

month = nov,

doi = "10.2109/jcersj.105.963",

language = "English (US)",

volume = "105",

pages = "963--969",

journal = "Journal of the Ceramic Society of Japan",

issn = "0914-5400",

publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

number = "11",

}

TY - JOUR

T1 - Preparation of perovskite-type oxides by the thermal decomposition of heteronuclear complexes, Ln[FexCo1-x(CN)6]·4H 2O(Ln=Pr-Yb)

AU - Sakamoto, Masatomi

AU - Nunziante, Patrizia

AU - Traversa, Enrico

AU - Matsushima, Shigenori

AU - Miwa, Masanari

AU - Aono, Hiromichi

AU - Sadaoka, Yoshihiko

PY - 1997/11

Y1 - 1997/11

N2 - Heteronuclear complexes of Ln[FexCo1-x(CN)6]·4H 2O(Ln=Pr-Yb) were synthesized and their thermal decomposition products were investigated. Thermal decomposition of the complexes results in the formation of perovskite-type oxides for Ln=Pr-Gd even at 800°C. The lattice parameters, a-, b- and c-lattice constants (crystal system: orthorhombic) increase linearly with the ratio of Fe/Co for the perovskite-type oxide. For Ln=Dy through Yb, the Ln2O3 phase is observed as the major product for x=0, but its content decreased with an increase in the Fe content; however, a single phase of the perovskite-type oxide was not formed for x=1. The perovskite-type structure for the Fe systems is easier to form compared with the Co systems. We clarified that the formation of the perovskite-type oxide is mainly affected by the ionic radius of the Ln3+ ion and the T3+ ion (T = Fe or Co).

AB - Heteronuclear complexes of Ln[FexCo1-x(CN)6]·4H 2O(Ln=Pr-Yb) were synthesized and their thermal decomposition products were investigated. Thermal decomposition of the complexes results in the formation of perovskite-type oxides for Ln=Pr-Gd even at 800°C. The lattice parameters, a-, b- and c-lattice constants (crystal system: orthorhombic) increase linearly with the ratio of Fe/Co for the perovskite-type oxide. For Ln=Dy through Yb, the Ln2O3 phase is observed as the major product for x=0, but its content decreased with an increase in the Fe content; however, a single phase of the perovskite-type oxide was not formed for x=1. The perovskite-type structure for the Fe systems is easier to form compared with the Co systems. We clarified that the formation of the perovskite-type oxide is mainly affected by the ionic radius of the Ln3+ ion and the T3+ ion (T = Fe or Co).

KW - Heteronuclear complexes

KW - Hexacyano complexes

KW - LnCoO

KW - LnFeO

KW - Perovskite-type oxides

KW - Rare-earth cobalticyanides

KW - Rare-earth ferricyanides

KW - Thermal decomposition

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U2 - 10.2109/jcersj.105.963

DO - 10.2109/jcersj.105.963

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