Work

Observation of Electric Potential Distribution in Model Capacitor Sample Using Electron Holography

Year: 2012

Type: article

Abstract: The electrical potential distribution in a model capacitor specimen, made of single-crystalline BaTiO3 and thin Pt plates, has been revealed by electron holography. In order to represent the inherent potential distribution related to the capacitance, undesired phase information was eliminated by the analysis of electron holograms acquired in various conditions of applied voltage; the undesired information includes signals due to electrical charging, thickness variation, and modulation of the reference electron wave by a long-range electric field. The observation of electric potential showed reasonable agreement with simulation for the model specimen.

Source: MATERIALS TRANSACTIONS

DOI: 10.2320/matertrans.mbw201108

Authors: Ryuichi Kuramae, Hiroyuki Ono, Yoshinori Fujikawa, Yasukazu Murakami, Daisuke Shindo

Institutions: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, TDK (Japan)

Language: English

Topic: Advanced Electron Microscopy Techniques and Applications

Subfield: Structural Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

Open Access status: bronze

Funders: Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science

Awards: Development of electron holography system for photoexcitation phenomena and its application to materials science, Microscopic mechanism of electric field-induced domain switching in manganese oxides