FORMATION OF IRON-OXIDE FILMS FROM STABILIZED MAGNETITE SOLS - MAGNETIC LIQUIDS

被引：7

作者：

MALCHENKO, SN ^{[1
]}

GOROSHKO, NN ^{[1
]}

BAIKOV, MV ^{[1
]}

CHUDAKOV, VA ^{[1
]}

ERMOLENKO, VI ^{[1
]}

机构：

[1] BYELORUSSIAN STATE UNIV, MINSK 220050, BELARUS

来源：

THIN SOLID FILMS | 1993年 / 227卷 / 02期

关键词：

D O I：

10.1016/0040-6090(93)90029-O

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Formation of thin supported iron oxide films from oleic acid stabilized Fe3O4 sols in decane medium has been studied using thermogravimetry, X-ray and electron diffraction, transmission electron microscopy, Mossbauer spectroscopy and chemical analysis. The continuous transparent films prepared by casting the sols over a flat substrate with subsequent heating in the air at 420-820 K were from 50-60 nm up to 1.5 mum thick, consisting of colloid-size particles. Intensive particle growth has been observed only above 670 K after complete removal of the dispersion medium and the stabilizer. The films had a crystal structure of magnetite on heating below 570 K, gamma-Fe2O3 between 620 and 670 K and alpha-Fe2O3 above 670 K.

引用

页码：128 / 132

页数：5

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[2]

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[3]

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