QQ客服 官方微博 反馈留言

	原位Raman光谱技术研究PLZT铁电陶瓷相变; Phase Transitions in PLZT Ceramics Observed by In-situ Raman Spectroscopy
	张飒 ; 刘莹 ; 刘怡萱 ; 程璇 ; 张颖
	2014-04-15
关键词	PLZT铁电陶瓷 相变 准同型相界 原位Raman光谱 PLZT ferroelectric ceramics phase transition near morphotropic phase boundary in-situ Raman spectroscopy
英文摘要	采用传统固相反应法制备了原子比zr/TI≈52/48,掺杂少量镧的锆钛酸铅(PlzT)铁电陶瓷材料,X射线衍射分析表明得到的陶瓷粉末样品为纯钙钛矿相。对PlzT铁电陶瓷材料进行不同温度下的原位rAMAn谱观测,得到了各rAMAn特征谱的频率和峰强随温度的变化规律。结果表明,从-200℃升温至600℃过程中,准同型相界附近的PlzT铁电陶瓷分别发生了两种相变:在0℃发生了单斜相到四方相的转变,而在350℃发生了四方相到立方相的转变;并且,在-150℃和250℃附近还可能分别发生低温单斜相到高温单斜相和混合相的相变。; The PLZT ceramics(atomic ratio Zr/Ti≈52/48,doped with small amounts of La) were prepared by conventional solid state reaction technique and identified to be pure perovskite phase by XRD.To observe the phase transition in the PLZT ceramics,the in-situ Raman spectra were measured at different temperatures.Accordingly,the variations of characteristic Raman shifts and intensities of the modes with temperatures were obtained.It is confirmed that two types of phase transitions near morphotropic phase boundary(MPB) occurred at 0℃ from rhombohedral to tetragonal and at 350℃ from tetragonal to cubic,in the temperature range from-200℃ to 600℃.What's more,the phase transitions for rhombohedral from low.to high-temperature phases and mixed phases may take place near-150℃ and 250℃,respectively.; 国家自然科学基金(51302236); 福建省特种先进材料重点实验室基金(2006L2003)~~
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/98491]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	张飒,刘莹,刘怡萱,等. 原位Raman光谱技术研究PLZT铁电陶瓷相变, Phase Transitions in PLZT Ceramics Observed by In-situ Raman Spectroscopy[J],2014.
APA	张飒,刘莹,刘怡萱,程璇,&张颖.(2014).原位Raman光谱技术研究PLZT铁电陶瓷相变..
MLA	张飒,et al."原位Raman光谱技术研究PLZT铁电陶瓷相变".(2014).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。