Synthesis of photochemically active metal oxides having magnetic superstructures

2014 Fiscal Year Final Research Report

• Project/Area Number: 24245035
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Functional materials/Devices
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: OHTOMO Akira 東京工業大学, 理工学研究科, 教授 (10344722)
• Co-Investigator(Renkei-kenkyūsha): KUMIGASHIRA Hiroshi 高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (00345092) ; FUJIMORI Jun 東京大学, 大学院理学系研究科, 教授 (10209108) ; OSHIMA Takayoshi 東京工業大学, 大学院理工学研究科, 助教 (60583151)
• Research Collaborator: YOSHIMATSU Kohei
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 磁性材料 / 光化学機能 / 超構造薄膜 / 電気・磁気デバイス / 元素戦略

Outline of Final Research Achievements

We have succeeded in synthesis of four new double-perovskite oxides, each of which exhibits high degree of order in the arrangements of different transition-metal atoms, to reveal their ground-state magnetic order. Also, photoanodes consisting of epitaxial films of transition-metal oxide solid-solutions have been developed to demonstrate visible-light water oxidation enhanced via metal-to-metal charge-transfers. Moreover, using electrochemical Li-ion doping technique, we have realized reversible superconductor-insulator transition in a Li-containing titanate. These studies can be recognized to bring new trend in the framework of “oxide electronics”, and further development of functional oxide materials owing to their characteristic electronic structures is expected.

Free Research Field

固体化学