Room temperature ferromagnetism of iron-doped rutile TiO2 nanorods synthesized by a low temperature method

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作者：
Melghit, Khaled [1 ]
Bouziane, Khalid [2 ]
机构：
[1] Chemistry Department, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khodh 123, Oman
[2] Physics Department, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khodh 123, Oman
来源：
Journal of Alloys and Compounds | 2008年 / 453卷 / 1-2期
关键词：
Nanorods of Fe-TiO2 were synthesized at 100 °C and room pressure by mixing titanium oxide wet gel TiO2&middotxH2O with a boiling solution of iron nitrate. The results of EDAX; performed on different selected area of the sample; revealed a homogeneous composition of about 3 at% Fe. Electron diffraction and XRD measurements show that the as-prepared Fe-TiO2 and annealed one at 550 °C have both a single rutile structure with no indication about the presence of a secondary phase. The transmission electron microscopy (TEM) micrographs show that both as-prepared Fe-TiO2 and annealed one at 550 °C have nanorod-shape with dimensions length by diameter of about 60 × 5 nm and 52 × 12 nm; respectively. Magnetization measurements show that both samples present a nonzero remanence and a coercivity of 108 and 120 Oe; respectively. At higher temperature; 850; °C; Fe-TiO2 decomposes to rutile TiO2 and new iron-titanate phase. © 2006 Elsevier B.V. All rights reserved;
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页码：102 / 107
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