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	掺镧锆钛酸铅陶瓷电致畴变过程中的相变; Phase transition of lanthanum-doped lead zirconate titanate ceramics during electric-field-induced domain switching
	杨凤娟 ; 程璇 ; 张颖
	2015-10-15
关键词	铁电陶瓷 原位XRD 电致畴变 相变 ferroelectric ceramics in-situ XRD electric-field-induced domain switching phase transition
英文摘要	利用原位Xrd技术研究未极化掺镧锆钛酸铅(PlzT)铁电陶瓷在不同直流电场加载过程中(002)和(200)衍射峰峰强与电场强度的关系,基于铁电畴取向分布的考虑,对(002)和(200)衍射峰峰强进行定量分析。通过对原位Xrd谱进行四方相和单斜相的分峰拟合处理,初步探讨电场强度对铁电陶瓷电致畴变和电致相变的影响。结果表明:对于PlzT试样,在电场加载过程中除了发生电致90°畴变外,还可能发生从四方相到单斜相的电致相变。在不同电场强度作用下,电致畴变与电致相变是一个相互竞争的过程,电致畴变是主要的,而电致相变相对减少。; Variations of the peak intensities of(002)and(200)diffraction peaks(I(002),I(200))with the applied electric fields were studied by in-situ X-ray diffraction method during the applications of different electric fields on the unpoled lanthanum-doped lead zirconate titanate(PLZT)ceramics.Considering the distribution of domain orientation,the quantitative analyses of peak intensities of I(002)and I(200)were performed.Based on the multi-peak curve fitting to the in-situ XRD spectra,the effects of the applied electric fields on the electric-field-induced domain switching and phase transition were preliminarily discussed.The results show that the electric-field-induced 90° domain switching occurs in PLZT specimens under the applied electric fields,at the same time,the electric-field-induced phase transition from tetragonal to monoclinic could also happen.The electric-field-induced domain switching and phase transition occur competitively in different electric fields.The major process is domain switching,while the minor process is phase transition.; 国家自然科学基金资助项目(11372263); 福建省特种先进材料重点实验室开放课题资助项目
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/98499]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	杨凤娟,程璇,张颖. 掺镧锆钛酸铅陶瓷电致畴变过程中的相变, Phase transition of lanthanum-doped lead zirconate titanate ceramics during electric-field-induced domain switching[J],2015.
APA	杨凤娟,程璇,&张颖.(2015).掺镧锆钛酸铅陶瓷电致畴变过程中的相变..
MLA	杨凤娟,et al."掺镧锆钛酸铅陶瓷电致畴变过程中的相变".(2015).

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