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

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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.