期刊
CHEMICAL PHYSICS LETTERS
卷 728, 期 -, 页码 74-79出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2019.04.083
关键词
Sintering; X-ray methods; Ferroelectric properties; Perovskites
资金
- National Natural Science Foundations of China [11574138, 21427801, 11874200]
- Top-Notch Young Talents Program of China
- National Key R&D Program of China [2016YFA0201104]
- Dengfeng Project B of Nanjing University
The ceramics of Sr3-xBaxSn2O7 (0 <= x <= 0.6) were synthesized by solid-state reaction method. The lattice constants of Sr3-xBaxSn2O7 increase with increasing of Ba doping. With increasing of the Ba2+ concentration from x = 0 to x = 0.2, the phase transition temperature reduces by 73 K. The vibration modes related to the phase transitions are strongly related to the tilting and rotation of SnO6 octahedra. The doping of Ba significantly aggravates the anharmonic effect and increases the Raman activity of the vibration mode A(2)((5)), and reduces the phonon lifetime and the Raman activity of the vibration mode A(1)((17)).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据