At the nanoscale, magnetic properties based onelectron spins are closely correlated with various transport phenomena, and we are allowed to exploit magneticproperties that are not apparent in a macroscale magnet. For spintronics enabling the mutual conversion betweenmagnetic and electrical properties and magnetics studying on various kinds of magnetic devices, magneticmaterials with high functionality by nanostructure control are indispensable. Our group works on the materialsfabrication and the fundamental research on physical phenomena for magnetics and spintronics based onnanostructure-control techniques. The achievementsobtained to date include the fabrication of spin-tocharge conversion materials, the demonstration of spinorbitronics devices using artificial antiferromagnets, highly efficient thermoelectric conversion using anomalous Nernst effect of metallic superlattices, and the fabrication of noble metal-free and rare earth-free magnetic ordered alloy with high magnetic anisotropy.
Materials Development Division
Magnetic Materials Research Laboratory
Prof.Takeshi SEKI
- Assoc. Prof. Shoya SAKAMOTO
- Assist. Prof. Keita ITO
- Assist. Prof. Takumi YAMAZAKI
Materials Fabrication for Magnetics / Spintronics by Nanostructure Control
Spintronics, nanomagnetism, energy conversion
Large spin-Hall effect in non-equilibrium Cu-Ir alloy. The optimum composition for large θSH was determined by combining the techniques of spin Peltier effect imaging and harmonic Hall voltage measurement.
Magneto-thermoelectric conversion device consisting of ferromagnetic iron nitride (Fe4N). a. Transmission electron microscope image of Fe4N epitaxial thin film and b. its anomalous Nernst effect.