NPG Asia Materials

A research team from Osaka University, The University of Tokyo, and Tokyo Institute of Technology revealed the microscopic origin of the large magnetoelectric effect in interfacial multiferroics composed of the ferromagnetic Co2FeSi Heusler alloy and the piezoelectric material. They observed element-specific changes in the orbital magnetic moments in the interfacial multiferroic material using an X-ray Magnetic Circular Dichroism (XMCD) measurement under the application of an electric field, and they showed the change contributes to the large magnetoelectric effect. The findings provide guidelines for designing materials with a large magnetoelectric effect, and it will be useful in developing new information writing technology that consumes less power in spintronic memory devices. The research results will be shown in an article, “Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroics” published in NPG Asia Materials.

The natural abilities of squid tissues and the creativity of chemists combine to take hydrogel research in new directions.

A team at Tohoku University have perfected a new heat treatment technique with rapid heating and asymmetrical cooling processes in metallic glass. This technique enabled the team to induce a gradient of local glassy structure, bringing an apparent work hardening behavior.