Artificial induction of domain walls in ferroelectric thin films and controlling of their electronic properties

2015 Fiscal Year Final Research Report

• Project/Area Number: 26820115
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electronic materials/Electric materials
• Research Institution: University of Hyogo
• Principal Investigator: Nakashima Seiji 兵庫県立大学, 工学(系)研究科(研究院), 助教 (80552702)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 強誘電体 / 薄膜 / ドメイン壁 / 選択形成

Outline of Final Research Achievements

A ferroelectric domain is an area in which spontaneous polarization vectors are aligned in the same direction. A boundary between the different domains is called domain wall. Recently, new functionalities of the ferroelectric domain wall such as photovoltaic properties or modulation of the electric conductivity have been attracted much attention. To realize novel devices using such new functionalities, a technique of artificial induction of the domain walls in the ferroelectric thin films is necessary. In this research, we found that patterns formed on a surface of a substrate control domain walls in ferroelectric BiFeO3 thin films, demonstrating artificial induction of the domain walls in the ferroelectric thin films

Free Research Field

強誘電体薄膜物性