Nanostructure Magnetism

Members

Associate Professor

N. Hosoito

Doctor course student

S. Uegaki (D2)

T. Hasegawa(D2)

Master course student

S. Hanasaka (M2)

R. Takechi (M1)

Research student

R. Yamagishi

Research field

We prepare metallic thin films and multilayers by ultrahigh vacuum deposition and sputtering techniques, and investigate their structure and magnetism. A remarkable feature of our laboratory is to study nanostructure magnetism using synchrotron radiation x-rays. We have developed resonant x-ray magnetic scattering techniques which fully utilize the characteristics of synchrotron radiation such as energy tunability and high polarization. Since the resonant scattering is element and orbital specific, this technique allows us to study element-specific magnetism, especially magnetism of nonmagnetic elements, which is a key of spin electronics.

Subject of recent studies

· Element specific magnetism of magnetic/magnetic multilayers.

· Magnetic structures and magnetization processes of metallic films consisting of a few layers.

Fe/Ru/Fe, Co/Ru/Co, Co/Ru/Fe trilayers.

· Induced magnetism in nonmagnetic layers and interlayer exchange coupling.

Co/Cu, Fe/Cu, Fe/Au systems.

· Element specific interface magnetism of multilayers with strong antiferromagnetic coupling.

Co/Ru system.

· Element specific interface magnetism of exchange bias system

Co_1-xFe_x/MnIr system.

· Development of techniques for synchrotron radiation magnetism.

Helicity modulation technique for resonant x-ray magnetic scattering.