Correlation between vibrational modes and structural characteristics of Ba[(Zn_1-xMg_x)_1/3Ta_2/3]O₃ solid solutions

• 作者: Helei Dong 石锋
• 来源期刊: 功能材料信息
• 学科: 工学
• 关键词: CORRELATION ceramics PHONON SINTERING VIBRATIONAL
• 年，卷（期）: gnclxx_2014,（1）
• 页码范围: 8-14
• 页数: 7页
• 分类号: TQ174.1

摘要

Ba[(Zn_1-xMg_x)_1/3Ta（2/3）]O₃（BZMT,x=0,0.2,0.4,0.6,0.8,and 1.0）solid solution ceramics were synthesized by a conventional solid-state sintering technique.Vibration spectra（Raman spectroscopy and Fourier trans form far-infrared reflection spectroscopy）and X-ray diffraction（XRD）were employed to evaluate the correla tion between microstructures and phonon modes of these solid solutions.Spectroscopic and structural data show sensitivity to structural evolution of samples with Mg²⁺concentration,and a 1:2 ordered phase appears when x≥0.2.The unit cell parameters decrease with increasing Mg²⁺content.The ordering degree reaches a relative maximum value in the range of Mg²⁺content,0.4≤x【0.6.The phonon modes were assigned,and the correlation of phonon vibrations in the microstructure were analyzed.The position and width of the phonon modes were determined and correlated to the ionic radii for the different atoms substituted in the B’-site.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	石锋	山东师范大学物理与电子科学学院	31	83	5.0	6.0
2	Helei Dong	山东师范大学物理与电子科学学院	1	0	0.0	0.0