Manganese-doped zirconia nanocrystals

被引:51
作者
Clavel, Guylhaine [2 ]
Willinger, Marc-Georg [2 ,3 ]
Zitoun, David [1 ]
Pinna, Nicola [2 ]
机构
[1] Univ Montpellier 2, AIME, Inst Charles Gerhardt, F-34095 Montpellier, France
[2] Univ Aveiro, Dept Chem, CICECO, P-3810193 Aveiro, Portugal
[3] Fritz Haber Inst, Max Planck Soc, Dept Inorgan Chem, D-14195 Berlin, Germany
关键词
zirconium; manganese; doping; magnetic properties; nanoparticles;
D O I
10.1002/ejic.200700977
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
In recent theoretical work, it was predicted that transition-metal-doped zirconia (ZrO2) can be ferromagnetic at room temperature with a dependence on the metal dopant and its oxidation state and concentration. M For experimental verification. of these predictions, manganese-doped ZrO2 nanoparticles were synthesized. The synthesis was achieved by the benz l alcohol route, which led to high-quality nanocrystals with uniform size and shape. The obtained particles present a homogeneous distribution of the magnetic ion. The crystallographic phase was studied by XRD, electron diffraction, and high-resolution TEM. The doping efficiency was determined at the macroscopic level by chemical analysis and at the nanoscale level by electron energy loss spectrometry. The local structure of the manganese ions in the ZrO2 matrix was characterized by electron paramagnetic resonance. Finally, the magnetic properties of the obtained nanocrystals were investigated by susceptibility measurements. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008).
引用
收藏
页码:863 / 868
页数:6
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