首 页  |  期刊简介  |  投稿须知  |  专家审稿  |  编者登陆  |  公告信息  |  联系我们  |  English
引用本文格式: Su Ning-Ning,Gao Han,Wu Xiao-Qian,Jin Jing-Jing,Chen Fang. The Dielectric Properties of AlN Nanowires under High-pressures [J]. J. At. Mol. Phys., 2022, 39: 042004 (in Chinese) [苏宁宁,高函,武晓倩,靳晶晶,陈芳. 高压下AlN纳米线的介电性质 [J]. 原子与分子物理学报, 2022, 39: 042004]
 
高压下AlN纳米线的介电性质
The Dielectric Properties of AlN Nanowires under High-pressures
摘要点击 87  全文点击 10  投稿时间:2021-04-19  修订日期:2021-05-07
查看全文  查看/发表评论  下载PDF阅读器
DOI编号   
中文关键词   高压物理学  介电  阻抗谱  电阻
英文关键词   High-pressure physics, permittivity, impedance spectra, resistance
基金项目   
作者单位E-mail
苏宁宁 中北大学 理学院 suningning826032@163.com 
高函 中北大学  
武晓倩 中北大学  
靳晶晶 中北大学  
陈芳 中北大学  
中文摘要
    利用高压X射线衍射和高压原位电化学阻抗谱法研究了AlN纳米线的高压结构和电学性质。研究结果表明:AlN纳米线的电学参数均在22.6 GPa发生了突变,该突变与样品发生了从纤锌矿到岩盐矿的结构相变相关。岩盐相中晶格对电子的散射在电传导中起主导作用;不同于纤锌相中的长程传导,岩盐相中存在短程传导,且其作用随压力增加而增大;纤锌相的介电损耗峰在1Hz且不受压力影响;岩盐相的介电损耗峰随压力减小且向低频方向移动。本研究将为AlN及其相关材料的进一步研究和应用提供实验依据。
英文摘要
    X-ray diffraction and in-situ alternate current impedance spectra of AlN nanowires have been measured under pressures up to 31.8 GPa by using a diamond anvil cell. The results show that the electrical parameters of AlN nanowires changed discontinuously at 22.6 GPa, which is related to the structural phase transition from wurtzite to rocksalt phase. The scattering of electrons by the crystal lattice in the rock salt phase plays a leading role in conduction process. The electron conduction in the wurtzite phase is mainly long-range conduction. Short-range conduction exists in the rocksalt phase, and the effect of short-range conduction is enhanced with increasing pressure; The dielectric loss peak of the wurtzite phase appears at 1 Hz and is not affected by pressure, while the dielectric loss peak of the rocksalt phase decreases with increasing pressure and shifts to the low frequency direction, indicating that pressure can effectively control the dielectric properties of the sample. This research will provide experimental basis for further research and application of AlN and related materials.

您是第 4082890 位访客
版权所有 @ 2006《原子与分子物理学报》编辑部
通讯地址:四川省成都市四川大学原子与分子物理研究所   邮编:成都 610065
电话:QQ: 3094757965  传真:  E-mail:jamp@scu.edu.cn
本系统由北京勤云科技发展有限公司设计