Atomic structure of dislocation core in SrTiO3

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630292
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical properties of metals/Metal-base materials
• Research Institution: Nagoya University
• Principal Investigator: Yamamoto Takahisa 名古屋大学, 工学(系)研究科(研究院), 教授 (20220478)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 転位 / 粒界 / 電子顕微鏡 / 電子セラミック

Outline of Final Research Achievements

Mechanical strength is closely related to deformation behaviors due to stress applied the structural material. The initial process of the deformation is depending on the dislocation motion, which is a kind of one dimensional lattice defects. The atomic structure governs the motion of dislocations.
In this study, we investigated to crafty the relationship between the dislocation core structure and the physical properties of the dislocations. To join two single crystals with a small angles, the atomic structure of the obtained dislocation arrays were analyzed, and further, we clarified the physical properties of the dislocations from a viewpoint of electric properties across the array of the dislocations.

Free Research Field

セラミック材料