Observation of room temperature Skyrmions in magnetic nanostructral materials and their low current density drive

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13268
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanostructural physics
• Research Institution: Hokkaido University
• Principal Investigator: Kaiju Hideo 北海道大学, 電子科学研究所, 准教授 (70396323)
• Co-Investigator(Renkei-kenkyūsha): KOMINE Takashi 茨城大学, 工学部, 准教授 (90361287)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: スキルミオン / 磁気ナノ構造 / スピントロニクス / 微細加工 / ジャロシンスキー守谷相互作用

Outline of Final Research Achievements

Magnetic skyrmions, which are described as vortices configuration, have attracted much interest due to their ultralow current density drive and potential application in next-generation energy-saving magnetic memory devices. In this study, we have investigated magnetic properties in Fe-based materials with nanometer-scale dot structures. We have also examined fabrication techniques for low current density drive of magnetic skyrmions. As a result, skymion-like spin textures can be observed on the surface of FeAl alloy with disordered A2 structures. Moreover, the fabrication technique using electron beam lithography and focused ion beam processing method could be a strong tool for the demonstration of room-temperature motion of skyrmions driven by electrical currents.

Free Research Field

応用物性