Electrical control of optical properties in ferromagnetic materials

2014 Fiscal Year Final Research Report

• Project/Area Number: 25887016
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: KOYAMA Tomohiro 東京大学, 工学(系)研究科(研究院), 助教 (60707537)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: スピントロニクス / 磁性の電界制御 / 磁気光学効果

Outline of Final Research Achievements

The goal of this work is the control of the optical properties of the ferromagnetic materials by electric field effect. In the first year, we have set up a measurement system and succeeded in depositing cobalt ultra-thin film on a commercially available glass substrate. In the second year, we have optimized the condition of the film deposition. Then, we have started measuring the electric field effect using the optical measurement system. As a result, we have observed clear change in the magnetic properties at room temperature. This suggests that the Faraday effect in cobalt thin film can be tuned by the electric field effect.

Free Research Field

スピントロニクス