Conversion electron Mossbauer spectroscopy study of Langmuir-Blodgett films

被引：0

作者：

Hanzel, D ^{[1
]}

Stahl, B ^{[1
]}

机构：

[1] Jozef Stefan Inst, SI-1001 Ljubljana, Slovenia

来源：

MATERIAL RESEARCH IN ATOMIC SCALE BY MOSSBAUER SPECTROSCOPY | 2003年 / 94卷

关键词：

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

We report on characterization and magnetic properties of very thin films of Fe-oxides formed by thermal desorption of iron stearate Langmuir-Blodgett films using low temperature conversion electron Mossbauer spectroscopy (CEMS). Langmuir-Blodgett films of iron stearate (23 and 27 monolayers) have been formed on silicon wafers and afterwards thermally treated in air at 260degreesC for 45 minutes. The resulting, very well defined oxide films exhibited very smooth and homogeneous surfaces. These oxide films have been investigated by ultra high vacuum low temperature CEMS. The very thin oxide film, supposedly gamma-FeOOH, contains only 6 monolayers of iron corresponding to only three crystallographic unit cells (or 1.5 magnetic unit cells) and thus enables the study of non-equivalent sites in the oxide film due to surface and interface effects. The magnetic ordering temperature of the 27 layers sample corresponds almost to the bulk value, while the 23 layers sample orders at lower temperature.

引用

页码：53 / 58

页数：6

共 15 条

[1] FABRICATION OF ULTRATHIN METAL-OXIDE FILMS USING LANGMUIR-BLODGETT DEPOSITION [J].