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Titolo:
PREPARATION OF PEROVSKITE-TYPE OXIDES BY THERMAL-DECOMPOSITION OF HETERONUCLEAR COMPLEXES, (LN[FE(CN)(6)]CENTER-DOT-NH(2)O)(X), (LN=LA-APPROXIMATE-TO-HO)
Autore:
SADAOKA Y; WATANABE K; SAKAI Y; SAKAMOTO M;
Indirizzi:
EHIME UNIV,FAC ENGN,DEPT APPL CHEM MATSUYAMA EHIME 790 JAPAN YAMAGATA UNIV,FAC SCI,DEPT CHEM YAMAGATA 990 JAPAN
Titolo Testata:
Journal of alloys and compounds
fascicolo: 2, volume: 224, anno: 1995,
pagine: 194 - 198
SICI:
0925-8388(1995)224:2<194:POPOBT>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Keywords:
PEROVSKITE-TYPE OXIDES; THERMAL DECOMPOSITION; HETERONUCLEAR COMPLEXES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
Y. Sadaoka et al., "PREPARATION OF PEROVSKITE-TYPE OXIDES BY THERMAL-DECOMPOSITION OF HETERONUCLEAR COMPLEXES, (LN[FE(CN)(6)]CENTER-DOT-NH(2)O)(X), (LN=LA-APPROXIMATE-TO-HO)", Journal of alloys and compounds, 224(2), 1995, pp. 194-198

Abstract

Perovskite-type oxides with submicron particle size were prepared by thermal decomposition of heteronuclear cyano complexes. Dehydration and decomposition of CN-bridged structure were performed by heating at similar to 300 degrees C in air, generating vitreous phases containing carbonates. For the complexes comprising La, Pr, Nd and Sm, submicron-sized particles of perovskite-type oxide directly formed from a vitreous phase. Single phase of perovskite-type oxide was formed by heating at similar to 600 degrees C of the complex with La. For the complexes comprising Gd, Dy and Ho, heat-treatment at similar to 300 degrees C led to formation of a vitreous phase containing carbonate and no perovskite-type oxide. By increasing the calcining temperature, a mixture ofsingle oxides (Fe2O3 and Ln(2)O(3)) and perovskite-type oxides was formed at lower temperatures and single-phase perovskite-type oxide at higher temperatures. The formation temperature of the perovskite-type oxide increased with decreasing lanthanoid ion radius.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 10:13:56