Magnetic properties of tin-doped magnetite nanoparticles
Data(s) |
2006
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Resumo |
Structural and magnetic characteristics of Fe3-xSnxO4 (x < 0.3) nanoparticles synthesized using the precipitation exchange method have been investigated by X-ray diffraction, transmission electron microscope, Mossbauer spectra, X-ray photoelectron spectroscopy and magnetization measurement. The mean particle dimension decreases from 8 to 6 nm, the lattice parameters enlarge, the saturation magnetization decreases, as well as the magnetization and the coercive field increase, with increasing tin-content. The paramagnetic property of the specimens indicates that the replacement of Fe3+ by Sn4+ on the octahedral sites of Fe3O4 causes a progressive lowering of the Curie temperature and the Curie temperatures of the materials are all lower than that of crystallite tin-doped magnetite. This striking debasing is due to the lessening of the grain size. This is the smallest size reported thus far for paramagnetic tin-doped magnetite particles. (c) 2006 Elsevier B.V. All rights reserved. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Lu YW (Lu Yan-Wu); Zhu QS (Zhu Qin-Sheng); Liu FX (Liu Fang-Xin) .Magnetic properties of tin-doped magnetite nanoparticles ,PHYSICS LETTERS A,2006 ,359(1):66-69 |
Palavras-Chave | #半导体物理 #tin-doped magnetite #composition and particle-size effect #paramagnetic properties #TITANOMAGNETITES FE3-XTIXO4 #IRON #TRANSITION #ANISOTROPY #OXIDES |
Tipo |
期刊论文 |