Development of practical spintronic devices using Heusler alloy films

2017 Fiscal Year Final Research Report

• Project/Area Number: 16H07436
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Structural/Functional materials
• Research Institution: National Institute for Materials Science
• Principal Investigator: Nakatani Tomoya 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, 主任研究員 (60782646)
• Research Collaborator: Sasaki Taisuke 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, 主任研究員 (30615993)
• Project Period (FY): 2016-08-26 – 2018-03-31
• Keywords: 巨大磁気抵抗 / 磁気センサ / ホイスラー合金

Outline of Final Research Achievements

We developed Heusler alloy thin films with high spin polarization, which improve the sensitivity of magnetic field sensor. By increasing the chemical order of Heusler alloy and combining with suitable underlayer and spacer layer materials, we improved giant magnetoresistance ratio up to 50% from the previous record of ~20% using conventional materials. This achievement is promising for the applications to read sensors for hard disk drive and high-sensitive magnetic field sensors.

Free Research Field

スピントロニクス