Structural and dynamic analysis of new oxides for mechanism solution of functional properties

我们要感谢在实验期间取得了许多有用的结果。在层状钙钛矿(BaN_2Mn_2O_7 Ln：稀土)中，发生了一级转变，转变时间与稀土的离子半径和结构扭曲密切相关。这些新结果通过高温透射电子显微镜的原位观察得到了澄清。此外，还研究了一种具有超结构的新型荧光粉基质材料。用相同的基质材料掺杂稀土作为激活剂，得到了明亮的RGB色光发射。作为一种节能的方法，我们尝试用毫米波加热在较低的温度下合成荧光粉，以缩短烧结时间。

We would like to thank to obtain many useful results during the experimental periods. In the layered-perovskites(BaLn_2Mn_2O_7 Ln : rare earth), first-order transition occurred and the transition time was closely related to the ionic radius of the rare-earth and structural distortions. Those new results are clarified by high-temperature TEM in-situ observations. Besides, a new host material of the phosphor that has a superstructure has been investigated. The bright RGB color emission was obtained using the same host material doped with rare-earth as activators. We tried to synthesize the phosphors at lower temperature for shorter sintering time by millimeter-wave heating as an energy-saving method.