PREPARATION OF NANOCRYSTALLINE SOLID MATERIAL LAFE0.5CO0.5O3 WITH THE CITRIC-ACID METHOD AND ITS XPS STUDY ON THE ABSORPTION OF OXYGEN

被引：11

作者：

LI, X

ZHANG, HB

LI, SJ

CHI, F

ZHAO, MY

机构：

[1] Department of Chemistry, Jilin University, Changchun

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1993年 / 34卷 / 01期

关键词：

Citric acid method - Nanocrystalline solid - X ray photoelectron spectroscopy;

D O I：

10.1016/0254-0584(93)90120-B

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The precursor of nanocrystalline material LaFe0.5Co0.5O3 was prepared using the citric acid method. After calcining the precursor at 500-degrees-C for 2 h, the mean diameter of the crystalline grain of LaFe0.5Co0.5O3 obtained was 12.9 nm. The nanocrystalline solid material was obtained at compacting pressures of 0.5, 1.0 and 1.5 GPa. The results indicated that the distribution of various components in the precursor had a direct influence on the calcining effect. XPS measurements showed that the intensity of the absorbed oxygen (O(A)) was larger than that of the lattice oxygen (O(L)) in the nanocrystals LaFe0.5Co0.5O3 and the ratio of the absorbed oxygen to lattice oxygen changed with the compacting pressure.

引用

页码：58 / 61

页数：4

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