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| 钛酸铅纳米线的铁电相变研究 | |
| 引用本文： | 胡永明,王钊,陶毅博,顾豪爽,王雨.钛酸铅纳米线的铁电相变研究[J].湖北大学学报(自然科学版),2011,33(1):61-64. |
| 作者姓名： | 胡永明 王钊 陶毅博 顾豪爽 王雨 |
| 作者单位： | 1. 湖北大学物理学与电子技术学院,湖北,武汉,430062;香港理工大学应用物理系,香港,九龙 2. 湖北大学物理学与电子技术学院,湖北,武汉,430062 3. 香港理工大学应用物理系,香港,九龙 |
| 基金项目： | 国家自然科学基金，湖北省自然科学基金 |
| 摘 要： | 采用水热法合成钙钛矿结构钛酸铅（PbTiO3）纳米线.水热温度对产物的形貌有较大的影响,PbTiO3纳米线的直径为10~20 nm.变温Raman光谱研究表明,随着温度的升高,位于600 cm-1以上声子的振动频率变化不大,而位于低频的振动峰发生了红移或消失;PbTiO3纳米线在283℃发生正交→四方的结构转变,而在435℃附近对应于PbTiO3纳米线的四方→立方转变. |
| 关 键 词： | 钛酸铅 纳米线 四方性 铁电相变 |
Study on the ferroelectric phase transition of lead titanate nanowires |
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| HU Yongming,WANG Zhao,TAO Yibo,GU Haoshuang,WANG Yu.Study on the ferroelectric phase transition of lead titanate nanowires[J].Journal of Hubei University(Natural Science Edition),2011,33(1):61-64. | |
| Authors: | HU Yongming WANG Zhao TAO Yibo GU Haoshuang WANG Yu |
| Institution: | 1.School of Physics and Electronic Technology,Hubei University,Wuhan 430062,China;2.Department of Applied Physics,The Hong Kong Polytechnic University,Hong Kong SAR,China) |
| Abstract: | Lead titanate（PbTiO3） nanowires were synthesized through hydrothermal method.The temperature had a significant impact on the morphology of the final product,and the diameter of PbTiO3 nanowires was 10 to 20 nm.Temperatrue-dependent Raman spectra showed that the vibration frequency of phonon was almost unchanged over 600 cm-1,while it was red-shifted or disappeared for the Raman peak in the low frequency.The structural transition of orthorhombic to tetragonal of PbTiO3 nanowires was about 283 ℃,and 435 ℃ corresponding to the transition of tetragonal to cubic. |
| Keywords: | lead titanate（PbTiO3） nanowires tetragonal ferroelectric phase transition |
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