NANOCRYSTALLINE PEROVSKITE-LIKE OXIDES FORMATION IN Ln(2)O(3) - Fe2O3 - H2O (Ln = La, Gd) SYSTEMS

被引：0

作者：

Tugova, E. A. ^{[1
]}

Karpov, O. N. ^{[1
]}

机构：

[1] RAS, Ioffe Phys Tech Inst, St Petersburg, Russia

来源：

NANOSYSTEMS-PHYSICS CHEMISTRY MATHEMATICS | 2014年 / 5卷 / 06期

关键词：

LnFeO(3); ferrites; nanostructures; precipitation technique; phase formation; X-Ray diffraction;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanocrystalline LnFeO(3) (Ln = La, Gd) ferrites have been prepared by the co-precipitation method followed by heat treatment in air. The formation mechanisms for LaFeO3 and GdFeO3 in Ln(2)O(3) Fe2O3 H2O (Ln = La, Gd) systems under the mentioned conditions are investigated. The phase interaction scheme, reflecting ways which lead to the target, synthesis product yield, as well as the common tendency of LaFeO3 and GdFeO3 formation mechanisms, are constructed. The mean sizes of coherent scattering regions of LaFeO3 and GdFeO3 were determined to be 30 +/- 3 and 40 +/- 4 nm, respectively.

引用

页码：854 / 860

页数：7

共 35 条

[1]

Bernal S., 2004, CHEM REACTIVITY BINA, P9

[2]

Ch Chang, 2007, INT J CHEM KINET, V39, P75

[3]

Chimie Gopalakrishnan J., 1995, CHEM MATER, V7, P1265

[4] Mechanochemical activation of starting oxide mixtures for solid-state synthesis of BiFeO3 [J].