Open Access Nano Express

Synthesis and magnetic properties of Zr doped ZnO Nanoparticles

Jing Zhang, Daqiang Gao, Guijin Yang, Jinlin Zhang, Zhenhua Shi, Zhaohui Zhang, Zhonghua Zhu and Desheng Xue*

Author Affiliations

Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, PR China

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Nanoscale Research Letters 2011, 6:587  doi:10.1186/1556-276X-6-587

Published: 10 November 2011

Abstract

Zr doped ZnO nanoparticles are prepared by the sol-gel method with post-annealing. X-ray diffraction results show that all samples are the typical hexagonal wurtzite structure without any other new phase, as well as the Zr atoms have successfully entered into the ZnO lattices instead of forming other lattices. Magnetic measurements indicate that all the doping samples show room temperature ferromagnetism and the pure ZnO is paramagneism. The results of Raman and X-ray photoelectron spectroscopy indicate that there are a lot of oxygen vacancies in the samples by doping element of Zr. It is considered that the observed ferromagnetism is related to the doping induced oxygen vacancies.

Keywords:
Zn1-xZrxO nanoparticles; Room temperature ferromagnetism; Oxygen vacancies