IR REFLECTANCE SPECTRA ON HIGH-PRESSURE COMPACTED NANOCRYSTALLINE LA-SR-FE-CO OXIDES

被引：6
作者：
LI, X
ZHANG, HB
LI, SJ
FAN, W
ZHAO, MY
机构：
[1] Department of Chemistry, Jilin University, Changchun
来源：
MATERIALS CHEMISTRY AND PHYSICS | 1995年 / 42卷 / 02期
关键词：
NANOCRYSTAL; COMPOSITE OXIDE; IR REFLECTANCE SPECTRA;
D O I：
10.1016/0254-0584(95)01565-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The nanocrystalline powders of composite oxides La1-xSrxFe1-yCoyO3 (x = 0, 0.1, 0.2; y = 0.5, 0.6, 0.8, 1.0) were compacted into pellets under pressures of 0.5, 1.0 and 1.5 GPa. In IR reflectance spectra, band splitting and red shift indicate the existence of various incomplete molecules with unsaturated coordinations on the surface and interface, whereas band blue shift indicates the existence of the 'pressured bonds' lying between the van der Waals force and covalent bond formed among the hanging-bond atoms due to the intergranular contact under different compacting pressures.
引用
收藏
页码：120 / 128
页数：9
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