Press Releases


Electric-field-induced magnetic domain writing in a Co wire:Yuki Tanaka (M1), Takamasa Hirai (D2), Assistant Professor Tomohiro Koyama, Associate Professor Daichi Chiba, Department of Applied Physics.

We have demonstrated that the local magnetization in a Co microwire can be switched by an application of a gate voltage without using any external magnetic fields. The electric-field-induced reversible ferromagnetic phase transition was used to realize this. An internal stray field from a ferromagnetic gate electrode assisted the local domain reversal in the Co wire. This new concept of electrical domain switching may be useful for dramatically reducing the power consumption of writing information in a magnetic racetrack memory, in which a shift of a magnetic domain by electric current is utilized.



Applied Physics Express: