Study on Synthesis of New Materials by Ozone Process and Their Properties

通过臭氧低温氧化技术，我们尝试合成了含有Fe4等异常高价金属离子的新材料。在Fe4-氧化物中，金属离子中的深d能级引起的氧空穴导致了与Fe2-和Fe3-氧化物不同的独特性质。在本项目中，钙钛矿型Sr1-xBaxFe4O_3和BaFe41-xMxO3(M=Sn4，Co4，…)已成功合成，并对其磁性进行了研究。

By the low temperature oxidation technique using ozone, we attempted to synthesize new materials containing metallic ions in unusual high valence states such as Fe4+. In Fe4+-oxides, oxygen holes caused by the deep d level in metallic ionsgive rise to the unique properties unlike in Fe2+- and Fe3+-oxides. In this project perovskite-type Sr1-xBaxFe4+O3 and BaFe4+1-xMxO3 (M=Sn4+, Co4+…) have been successfully synthesized, and their magnetic properties have been investigated.