NANOCRYSTALLINE ALPHA-FE2O3 SOL-GEL THIN-FILMS - A MICROSTRUCTURAL STUDY

被引：33

作者：

ARMELAO, L

GRANOZZI, G

TONDELLO, E

COLOMBO, P

PRINCIPI, G

LOTTICI, PP

ANTONIOLI, G

机构：

[1] UNIV PADUA,DIPARTIMENTO INGN MECCAN SETTORE MAT,I-35131 PADUA,ITALY

[2] UNIV PARMA,DIPARTIMENTO FIS,I-43100 PARMA,ITALY

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1995年 / 193卷

关键词：

D O I：

10.1016/0022-3093(95)00387-8

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The structure of alpha-Fe2O3 sol-gel thin films, obtained from an alkoxide precursor, was investigated by X-ray diffraction, X-ray absorption spectroscopy and conversion electron Mossbauer spectroscopy. Samples heated at 300 degrees C were amorphous, while those treated at 400 and 500 degrees C showed the presence of crystalline hematite. The crystallites were small enough to give rise to the superparamagnetic effect. In the nanostructured films, the alpha-Fe2O3 particles were not linked together but dispersed in a network of amorphous ferric oxide.

引用

页码：435 / 438

页数：4

共 12 条

[1] XPS AND UV-VIS STUDY OF HIGH-PURITY FE2O3 THIN-FILMS OBTAINED USING THE SOL-GEL TECHNIQUE [J].