Magnetic properties of hydrogenated Li and Co doped ZnO nanoparticles

被引：30

作者：

Jayakumar, O. D.

Gopalakrishnan, I. K. ^{[1
]}

Shashikala, K.

Kulshreshtha, S. K.

Sudakar, C.

机构：

[1] Bhabha Atom Res Ctr, Div Chem, Bombay 400085, Maharashtra, India

[2] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 20期

关键词：

BULK; FERROMAGNETISM; TEMPERATURE; SHALLOW; STATE;

D O I：

10.1063/1.2387877

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of hydrogenation on the magnetic properties of Zn0.85Co0.05Li0.10O nanoparticles is presented. It was found that the sample hydrided at room temperature (RT) showed weak ferromagnetism, while that hydrided at 400 degrees C showed robust ferromagnetism at room temperature. In both cases reheating the sample at 400 degrees C in air converts it back into the paramagnetic state completely. The characterization of samples by x-ray and electron diffraction showed that room temperature ferromagnetism observed in the samples hydrogenated at RT is intrinsic in nature, whereas that observed in the samples hydrogenated at 400 degrees C is partly due to the cobalt metal clusters. (c) 2006 American Institute of Physics.

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