Atomic-scale analysis of the ordering of the strongly correlated electrons by monochromated aberration-corrected TEM/STEM

2016 Fiscal Year Final Research Report

• Project/Area Number: 26390012
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nanostructural physics
• Research Institution: National Institute for Materials Science
• Principal Investigator: Nagai Takuro 国立研究開発法人物質・材料研究機構, 電子顕微鏡ステーション, 主任エンジニア (90531567)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: ローレンツ電顕法 / モノクロメータ / 球面収差補正 / ヘリカル反強磁性

Outline of Final Research Achievements

We developed high-resolution Lorentz microscopy using monochromator and Cs corrector to realize sub-nanoscale real-space observation of spin magnetic moments. We decreased the information limit of the Lorentz image to 0.6 nm and successfully observed a lattice fringe with the period of 0.62 nm for a layered manganite with no magnetic field applied. Sub-nanoscale observation of temperature-dependent distribution of magnetization in helical antiferromagnetic phase of dysprosium was also performed.

Free Research Field

物質科学