硅酸盐学报2011，Vol.39Issue(2)：301-305,5.
退火气氛对Zn0.87Co0.10Na0.03O薄膜光、电和磁性能的影响
Influence of Annealing Atmosphere on Optical, Electric and Magnetic Properties of Zn0.87Co0.10Na0.03O Films
摘要
Abstract
Co-Na co-doped ZnO diluted magnetic semiconductor Zn0.87Co0.10Na0.03O films were prepared by sol-gel method and annealing in different atmospheres. The crystal structure, luminescence, electric and magnetic properties of the Zn0.87Co0.10Na0.03O film samples were determined, and the effects of annealing atmosphere on properties of the Zn0.87Co0.10Na0.03O film samples were investigated. The results show that the samples are ZnO wurtzite structure, and are preferentially oriented in the c-axis (002) direction,without finding any additional diffraction peaks related to Co and Na element. At room temperature, with excitation wavelength of 340 nm, there is a narrow ultraviolet emission band of around 379-387 nm and a wide emission band around 450-600 nm in the visible light area. Na doped-ZnO does not obtain p-type ZnO. The electron carrier concentrations of n-type Zn0.87Co0.10Na0.03O films decrease with the decrease of oxygen flux. The samples annealed in rich oxygen atmosphere have ferromagnetism at room temperature,and the saturation magnetization per unit volume of them sharply decreases with the decrease of oxygen flux. However, the samples annealed in hypoxic atmosphere are not ferromagnetism but anti-ferromagnetism.关键词
氧化锌/稀磁半导体/溶胶-凝胶法/退火气氛Key words
zinc oxide/ diluted magnetic semiconductor/ sol-gel method/ annealing atmosphere分类
信息技术与安全科学引用本文复制引用
徐光亮,赵德友,张磊,彭龙,刘桂香..退火气氛对Zn0.87Co0.10Na0.03O薄膜光、电和磁性能的影响[J].硅酸盐学报,2011,39(2):301-305,5.基金项目
四川省教育厅重点项目(08ZA009) （08ZA009）
西南科技大学博士基金(08ZX0102)资助项目. （08ZX0102）
