New synthesis routes for obtaining dysprosium manganese perovskites

被引：19

作者：

Carp, O

Patron, L

Ianculescu, A

Pasuk, J

Olar, R

机构：

[1] IG Murgulescu Inst Phys Chem, Bucharest, Romania

[2] Univ Toulouse 3, Lab Chim Mat Inorgan & Energet, F-31062 Toulouse 4, France

[3] SC ICPE SA, Bucharest 74204, Romania

[4] Univ Bucharest, Dept Inorgan Chem, Bucharest, Romania

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2003年 / 351卷 / 1-2期

关键词：

rare earth compounds; transition metal compounds; chemical synthesis; X-ray diffraction;

D O I：

10.1016/S0925-8388(02)01079-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dysprosium manganese perovskite DyMnO3+delta has been synthetized via thermal decomposition of polynuclear coordination compound precursors, containing as ligands polyhydrocarboxylic acid anions (malic, tartric and gluconic). The evolution of crystal symmetry has been interpreted by considering the effect of the Mn4+ content, which depends on the nature of the precursor, namely the complexing agent. DyMnO3+0.07 generated from a malic precursor presents an orthorhombic structure. In DyMnO3+0.13 obtained from a tartric compound a two-phase mixture of the orthorhombic and hexagonal structure is detected. A pure hexagonal compound DyMno(3+0.20) is obtained from a gluconic derived oxide. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：314 / 318

页数：5

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