Atomistic scale analysis of microstructures in unconventional ferroelectric oxides

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760533
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Physical properties of metals
• Research Institution: The University of Tokyo
• Principal Investigator: TOHEI Tetsuya 東京大学, 工学(系)研究科(研究院), 助教 (00463878)
• Research Collaborator: MATSUMOTO Takao ; NAKABAYASHI Mamiko
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 酸化物 / 走査透過型電子顕微鏡 / 強誘電体 / ドメイン構造 / 第一原理計算

Outline of Final Research Achievements

Microscopic structural analysis has been performed on non-perovskite hexagonal RMO3 compounds where unconventional ferroelectric properties are expected. Synthesis of ceramics and single crystal samples and high resolution observations by scanning transmission electron microscopy (STEM) have been performed in conjunction with theoretical analysis based on first principles calculations. Our observations have revealed atomistic scale details of the DyInO3 and YMnO3 compounds' crystal and domain structures, demonstrating the capability of the present method combining atomic resolution STEM observations and theoretical calculations for investigating microstructures of oxides and other compounds.

Free Research Field

ナノ構造解析