-
摘要: 采用背用散射的方法，测量了Bi1.8Nd0.2Ti4O11的拉曼光谱。实验结果表明，该掺杂样品发生温致和压致软模相变的温度和压力分别为200 ℃和3.35 GPa。文中讨论了相变点移动的原因及高频声子模随温度和压力的变化。Abstract: The Raman spectra of Bi1.8Nd0.2Ti4O11 have been measured by backward scattering. Experimental results show that the phase transition pressure and temperature are 3.35 GPa and 200 ℃, respectively. The cause of the shift in the phase transition point and the variation of the high frequency phonon mode with temperature or pressure, were discussed in this paper.
-
Key words:
- high pressure /
- high temperature /
- Raman spectra /
- soft mode phase transition
-
Meng Jinfang, Zou Guangtian, Zhao Yongnian, et al. Physics Letters A, 1992, 163: 135-138. Hisano K, Todo K. Solid State Commun, 1977, 24: 247-150. Subbarao E C. J Am Ceram Soc, 1962, 45: 564. 孟进芳, 崔启良, 邹广田, 等. 吉林大学自然科学学报, 1992, 4: 73-76. Petushkova L V, Dmitrieva S P, Pobedimskaya E A, et al. Doll Akad Nauk SSSR, 1974, 216: 544. Zou Guangtian, Meng Jinfang, et al. Physics Letters A. 孟进芳, 邹广田, 赵永年, 等. 中国科学A辑, 1992, 9: 945-950. -
点击查看大图
计量
- 文章访问数: 8626
- HTML全文浏览量: 1951
- PDF下载量: 615
下载:
