XRD and Mossbauer spectroscopy investigation of Fe2O3-Al2O3 nano-composite

被引：31

作者：

Liu, M ^{[1
]}

Li, HB

Xiao, L

Yu, WX

Lu, Y

Zhao, ZD

机构：

[1] Jilin Normal Univ, Phys Coll, Siping 136000, Peoples R China

[2] Jilin Univ, Dept Mat Sci, Changchun 130023, Peoples R China

[3] Jilin Univ, Alan G MacDiarmid Lab, Changchun 130023, Peoples R China

[4] Jilin Univ, Natl Key Lab Superhard Mat, Changchun 130023, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 294卷 / 03期

关键词：

alpha-Fe2O3/alpha-Al2O3; nano-composites; Mossbauer;

D O I：

10.1016/j.jmmm.2004.12.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe2O3-Al-2-O-3 nano-composites were synthesized by sol-gel means. The properties of samples sintered at various thermal treatment temperatures were investigated by X-ray diffraction (XRD) and Mossbauer spectroscopy (XIS). The experimental results show that the gamma- to alpha-Al2O3 transformation occurs at lower temperature after iron oxide doping. The samples obtained at 1173 K contained poorly crystallized alpha-Al2O3 phase and an amorphous iron oxide. When the temperature of heating was increased to 1373 K, the sample was composed of alpha-Fe2O3/alpha-Al2O3 nano-composite and some solid solution. A superparamagnetic phenomenon was observed until the thermal treatment temperature reached 1373 K. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：294 / 297

页数：4

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