Fourier Transform Far-infrared Reflection Spectroscopy of Ba[Zn-1/3(Nb1-xTax)(2/3)]O-3 Solid Solutions

doi:10.4028/www.scientific.net/AMR.873.316

	Fourier Transform Far-infrared Reflection Spectroscopy of Ba[Zn-1/3(Nb1-xTax)(2/3)]O-3 Solid Solutions
	Shi, Feng; Gu, Yufen; Li, Cuixia
	2014
关键词	Microwave dielectric ceramics Fourier transform far-infrared reflection spectroscopy Crystal structures Phonon modes
卷号	873
DOI	10.4028/www.scientific.net/AMR.873.316
页码	316-321
英文摘要	Ba[Zn-1/3(Nb1-xTax)(2/3)]O-3 (BZNT, x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) solid solutions were synthesized by conventional solid-state sintering technique. Fourier transform far-infrared reflection spectroscopy (FTIR) and X-ray diffraction (XRD) were employed to evaluate the correlation between crystal structures and vibration modes of these solid solutions as a function of Nb5+ ions replaced by Ta5+ ions. Spectroscopic and structural data show sensitivity to the sample structural evolution with Ta5+ concentration. XRD result shows that the peaks shift to lower angle, i.e. higher d-spacing, with the increase in Ta5+ content, and the lattice structures have changed from cubic structure to hexagonal structure gradually with the increase in the unit cell volume due to the substitution of Ta5+ to Nb5+. The phase transition is also verified by the FTIR spectra. The phonon modes of the vibration spectra were assigned, the position and width were determined, and the correlation of phonon vibrations with the crystal structures for the different atoms substituted in the B ''-site was found.
会议录	EIGHTH CHINA NATIONAL CONFERENCE ON FUNCTIONAL MATERIALS AND APPLICATIONS
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
语种	英语
WOS研究方向	Materials Science
WOS记录号	WOS:000336337000052
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/36679]
专题	材料科学与工程学院
通讯作者	Shi, Feng
作者单位	Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Shi, Feng,Gu, Yufen,Li, Cuixia. Fourier Transform Far-infrared Reflection Spectroscopy of Ba[Zn-1/3(Nb1-xTax)(2/3)]O-3 Solid Solutions[C]. 见:.