Electric field control of magnetic phases via lattice and charge modulation and its underlying mechanisms

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630303
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Inorganic materials/Physical properties
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Tomoyasu Taniyama 東京工業大学, 応用セラミックス研究所, 准教授 (10302960)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 磁性 / マルチフェロイクス / スピントロニクス

Outline of Final Research Achievements

We have studied strain effects on the magnetic phases of FeRh in FeRh/ferroelectric BaTiO3 heterostructures due to the structural phase transitions and domain switching of BaTiO3. A sharp drop in the magnetization was observed at the tetragonal to orthorhombic and the orthorhombic to rhombohedral phase transitions, clearly indicating that the antiferromagnetic phase is stabilized by the compressive strain due to the structural phase transitions of BaTiO3. Also, we have demonstrated that electric field induced a-c domain switching makes the antiferromagnetic phase stable at room temperature.

Free Research Field

ナノ磁性、スピントロニクス