Synthesis and characterization of extremely low valent iron

2016 Fiscal Year Final Research Report

• Project/Area Number: 26620044
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Inorganic chemistry
• Research Institution: Kyoto University
• Principal Investigator: Takafumi Yamamoto 京都大学, 工学研究科, 助教 (80650639)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 鉄一価 / 低原子価 / 高圧 / 電荷移動 / 平面四配位

Outline of Final Research Achievements

In this research, we explored extremely low valent iron. We demonstrated that (Sr0.7Eu0.3)FeO2 shows a intersite charge transfer transition, which read mnovalent iron. Around the intersite charge transfer transition, we found that the compound exhibits interesting phenomena, such as a spin transition, an inslator-to-metal transition, a magnetic transition, and a spin flop transition. This indicate that extremely low valent iron can be interesting playground for searching exotic phenomena. In addition, we synthesized new compounds, lanthanoid-substituted SrFeO2 and BaFe2Se2O.

Free Research Field

固体化学