Hydrothermal synthesis of two perovskite rare-earth manganites, HoMnO3 and DyMnO3

被引：32

作者：

Wang, YW ^{[1
]}

Lu, XY ^{[1
]}

Chen, Y ^{[1
]}

Chi, FL ^{[1
]}

Feng, SH ^{[1
]}

Liu, XY ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, State Key Lab Inorgan Synt & Preparat Chem, Changchun 130023, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2005年 / 178卷 / 04期

基金：

中国国家自然科学基金;

关键词：

hydrothermal synthesis; metastable phase;

D O I：

10.1016/j.jssc.2004.12.039

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two perovskite rare-earth manganites RMnO3 (R = Ho, Dy) were synthesized from the hydrothermal redox reactions of KMnO4 and MnCl2 at 250 degrees C and characterized by means of X-ray diffraction, scanning electron microscopy and SQUID. They are orthorhombic, whereas the hexagonal phases, which were competitive strongly with the orthorhombic phases in solid-state reactions, are avoided in the hydrothermal systems. The pure metastable manganites may serve as a model for understanding the magnetisms of Jahn-Teller distortion and charge ordering. This new synthetic approach leaves many rooms for new doped or undoped RMnO3 compounds. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：1317 / 1320

页数：4

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