Control of polarization switching in tetrahedral ferroelectrics by thin film forming with application of strain

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K18212
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Inorganic materials/Physical properties
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: YASUI Shintaro 東京工業大学, 科学技術創成研究院, 助教 (40616687)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: ferroelectrics / thin films / epitaxial strain / tetrahedral

Outline of Final Research Achievements

Purpose of this study is focus on development of tetrahedral and tetrahedral/octahedral hybrid type ferroelectrics and their polarization switching. From first principle calculation, activation energy of polarization switching in wurtzite tetrahedral ferroelectrics was 0.25eV. In addition, in the hybrid tetrahedral/octahedral ferroeelctrics case, we have investigated k-Al2O3 type ferroelectrics as a model of hybrid structure. Activation energy of polarization switching was 0.1eV, then we could observed polarization switching experimentaly, also.

Free Research Field

無機材料・物性