Development and expansion of scanning electron microscopy technique for wide area and high resolution magnetic imaging

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K14110
• 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: Kyushu University
• Principal Investigator: NISHIDA MINORU 九州大学, 総合理工学研究院, 教授 (90183540)
• Co-Investigator(Renkei-kenkyūsha): MURAKAMI Yasukazu 九州大学, 大学院工学研究院, 教授 (30281992)
• Research Collaborator: MIYAZAKI Shinsuke ; AKAMINE Hiroshi ; SOEJIMA Yohei
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 走査電子顕微鏡 / 磁気構造 / 磁気記録合金 / 強磁性形状記憶合金 / その場観察 / 環状検出器 / 表面起伏 / モアレ

Outline of Final Research Achievements

The magnetic domain structure can be observed easily by conventional scanning electron microscopy. However, this classic method has not been used widely because it allows observations of only limited portions of the magnetic domains.
We have developed a visualization technique for the magnetic domain structure using an annular electron detector. We showed that the whole magnetic domain structure is quickly and easily acquired by our technique. Our technique has the advantage of simultaneously evaluating the magnetic domain structure and various microstructural properties, such as morphology, crystallographic orientation, and chemical composition. Therefore, we expect that the technique will be widely applicable to many magnetic materials and devices in both academic and engineering fields.

Free Research Field

材料組織学