Zhang Jing, Gao Daqiang, Yang Guijin, Zhang Jinlin, Shi Zhenhua, Zhang Zhaohui, Zhu Zhonghua, Xue Desheng
Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, PR China.
Nanoscale Res Lett. 2011 Nov 10;6(1):587. doi: 10.1186/1556-276X-6-587.
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.
通过溶胶-凝胶法并进行后退火制备了Zr掺杂的ZnO纳米颗粒。X射线衍射结果表明，所有样品均为典型的六方纤锌矿结构，没有任何其他新相，并且Zr原子已成功进入ZnO晶格，而没有形成其他晶格。磁性测量表明，所有掺杂样品均表现出室温铁磁性，而纯ZnO为顺磁性。拉曼光谱和X射线光电子能谱结果表明，通过Zr掺杂元素，样品中存在大量氧空位。据认为，观察到的铁磁性与掺杂诱导的氧空位有关。
