| K_(0.5)Na_(0.5)NbO_3纳米材料的表征及其水热生长习性研究 |
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| 引用本文： | 王钊,胡永明,刘莎莉,周迪,胡正龙,顾豪爽.K_(0.5)Na_(0.5)NbO_3纳米材料的表征及其水热生长习性研究[J].湖北大学学报(自然科学版),2010,32(1):54-57. |
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| 作者姓名： | 王钊 胡永明 刘莎莉 周迪 胡正龙 顾豪爽 |
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| 作者单位： | 湖北大学,物理与电子技术学院,铁电压电材料与器件湖北省重点实验室,湖北,武汉,430062 |
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| 摘 要： | 采用水热法在一定条件下合成K0.5Na0.5NbO3(KNN)纳米材料.利用XRF、XRD、SEM、Raman散射光谱和紫外/可见吸收光谱分别对材料的组分、物相、形貌、声子振动模式和光吸收等性质进行了表征.结果显示所合成的KNN材料为正交相钙钛矿结构,能隙约2.93 eV,其室温拉曼光谱与块体相比存在一定蓝移.此外,反应时间对产物形貌影响较大,阶梯状复杂形貌可能是一种聚集生长机制.
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| 关 键 词： | K0.5Na0.5NbO3 纳米材料 水热法 生长习性 |
Growth behavior and characterization of K_0.5Na_0.5NbO_3 nanostructures synthesized by hydrothermal method |
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| WANG Zhao,HU Yongming,LIU Shali,ZHOU Di,HU Zhenglong,GU Haoshuang.Growth behavior and characterization of K_0.5Na_0.5NbO_3 nanostructures synthesized by hydrothermal method[J].Journal of Hubei University(Natural Science Edition),2010,32(1):54-57. |
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| Authors: | WANG Zhao HU Yongming LIU Shali ZHOU Di HU Zhenglong GU Haoshuang |
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| Institution: | (School of Physics and Electronic Technology,Key Laboratory of Ferro-Piezoelectric Materials and Device of Hubei Province,Hubei University,Wuhan 430062,China) |
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| Abstract: | K0.5Na0.5NbO3 nanomaterial was synthesized by hydrothermal method under certain conditions.The composition,phase,vibrational mode,optical absorption properties and morphology were characterized by XRF,XRD,Raman scattering spectrum,UV/vis absorption spectrum and SEM.The results showed that the structure of the as-synthesized K0.5Na0.5NbO3 was orthorhombic perovskite,with the energy band of about 2.93 eV.Blue shifts happened with the Raman band comparing the K0.5Na0.5NbO3 nanomaterial with bulk materials.Reaction times played an important role in the morphologies of the K0.5Na0.5NbO3.Aggregational growth may be the formation mechanism of the final complex step-like morphology. |
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| Keywords: | K0 5Na0 5NbO3 |
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