Presentation Information
[7p-N202-3]Chemical Reactions upon Combinatorial Epitaxial Thin Films: High throughput exploration for Crystalline Phases and Physical Properties of Multinary Nitrides
〇Takuto Soma1, Yushi Hiraide1, Hiroshi Kumigashira2, Kohei Yoshimatsu1, Akira Ohtomo1 (1.Science Tokyo, 2.Tohoku Univ.)
Keywords:
nitrides,combinatorial,solid-state chemistry
In recent years, predictions of new crystal phases and functionalities in multinary nitride materials have led to attempts at thin film synthesis across various substances. Particularly, high-throughput phase exploration through combinatorial synthesis and the elucidation of physical properties via high-crystallinity epitaxial thin film synthesis have begun to be realized in recent years. However, research that simultaneously achieves high throughput and high crystallinity is still largely unrealized, and the simultaneous high-speed exploration of crystal phases and physical properties remains a developing area. Therefore, we have established a combinatorial epitaxial experimental system capable of achieving both. On the other hand, recent informatics-based approaches have revealed that nitrides generally exhibit a uniquely high metastability. It has been reported that the non-equilibrium synthesis of thin film growth leads to a narrowing of the phase exploration space due to the settling into metastable phases. Thus, we have embarked on high-throughput exploration of various crystal phases and physical properties by developing chemical reactions upon combinatorial epitaxial thin films as precursors.