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| Ni掺杂ZnO的结构、光学和磁学性质 | |
| 引用本文： | 冯春辉,刘清华,赵瑞斌.Ni掺杂ZnO的结构、光学和磁学性质[J].河北师范大学学报(自然科学版),2009,33(3). |
| 作者姓名： | 冯春辉 刘清华 赵瑞斌 |
| 作者单位： | 1. 邢台学院,计算机系,河北,邢台,054001 2. 邢台学院,物理系,河北,邢台,054001 3. 河北医科大学,基础部,河北,石家庄,050017 |
| 摘 要： | 利用溶胶-凝胶法制备了Zn1-xNixO(x=0.1 %,0.4 %,0.7 %,1.0 %)粉末,研究了样品的结构、光学和磁学性质.X射线衍射表明所有样品都具有纤锌矿结构,没有发现第2相.随着掺杂量的增加c轴晶格常数变小.X射线光电子能谱显示样品中的Ni离子处于+2价态.由紫外可见光吸收谱发现,随着掺杂量的增加能隙逐渐变小,证实了Ni2+对Zn2+的替代.由光致发光谱发现,在390 nm附近出现了由于近带边自由激子复合引起的紫外峰和以467 nm为中心宽带深能级发光带组成的由缺陷引起的较宽的蓝光.磁化强度测量表明,样品具有室温铁磁性,且随着掺杂浓度的增加,饱和磁化强度增加.当掺杂量为1.0 %时饱和磁化强度最大为0.076 μB/Ni. |
| 关 键 词： | 溶胶-凝胶 Ni掺杂ZnO 紫外吸收谱 光致发光 室温铁磁性 |
Structure Optical and Magnetic Properties of Ni-doped ZnO Powders Prepared by Sol-gel Technique |
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| FENG Chun-hui,LIU Qing-hua,ZHAO Rui-bin.Structure Optical and Magnetic Properties of Ni-doped ZnO Powders Prepared by Sol-gel Technique[J].Journal of Hebei Normal University,2009,33(3). | |
| Authors: | FENG Chun-hui LIU Qing-hua ZHAO Rui-bin |
| Institution: | 1.Department of Computer Science;Xingtai College;Hebei Xingtai 054001;China;2.Department of Physics;3.Department of Fundamental Teaching;Hebei Medical University;Hebei Shijiazhuang 050017;China |
| Abstract: | (x=0.1 %,0.4 %,0.7 %,1.0 %)powders have been prepared by sol-gel.The structural,optical and magnetic properties of powders have been investigated.X-ray diffraction measurements have shown that Ni-doped ZnO has the expected wurzite structure and the c-axis lattice constants decrease as doped Ni increase.X-ray photoelectron spectroscopy results have revealed that the Ni ion is in a +2 charge state in the samples.The optical absorption spectra has revealed that the band-gap energy of Zn1-xNixO is decreased wit... |
| Keywords: | sol-gel Ni doped ZnO UV-absorption Photoluminescence room temperature ferromagnetism |
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