Multiscale microstructral analysis of functional materials by TEM

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13306
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials engineering
• Research Institution: Osaka Prefecture University
• Principal Investigator: MORI SHIGEO 大阪府立大学, 工学(系)研究科(研究院), 教授 (20251613)
• Research Collaborator: HARADA Ken 理化学研究所, 上席研究員
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 微細構造解析 / 電子回折 / ローレンツTEM

Outline of Final Research Achievements

A method of electron diffraction with the objective lens turned off is developed by using three intermediate lenses as compound lenses. A crossover which is adjusted on the selected-are aperture plane is projected on the fluorescent with the compound lenses using a camera length from 0.8 to 4.5 m. Magnetic dependence of electron diffraction patterns is able to be observed in the electron optical system with the objective lens under weak excitation condition. The optical system is switched to a small-angle electron diffraction mode without changing the illumination system. Electron diffraction as a function of a magnetic field as well as small-angle electron diffraction and a dark-field image is obtained to observe magnetic domain structures in hexaferrites using the developed method.

Free Research Field

材料物性