Tohoku University

tohoku_en

Tohoku University (東北大学 (東北帝國大學 prior to 1945) Tōhoku daigaku), abbreviated to Tohokudai (東北大 Tōhokudai), located in Sendai, Miyagi in the Tōhoku Region, Japan, is a Japanese national university. It is the third oldest Imperial University in Japan and is a member of the National Seven Universities. It is considered as one of the most prestigious universities in Japan, and one of the top fifty universities in the world.

In 2009, Tohoku University (TOH) had ten colleges within the university, including fifteen departments with graduate students, with a total enrollment of 17,949 students. The university’s three core values are “Research First (研究第一主義),” “Open-Door (門戸開放),” and “Practice-Oriented Research and Education (実学尊重)”.

The Magnetic Materials Laboratory managed by Prof. Takanashi in Institute for Materials Research at TOH is one of the largest research groups working on nano-magnetism and spintronics in Japan. The group has a lot of film fabrication systems (four ultra-high-vacuum (UHV) compatible magnetron sputtering systems and four MBE systems) and magnetic and electric properties measurement facilities (SQUID magnetometer, vibrating sample magnetometer, MOKE and low-temperature and high-frequency compatible prober systems).

TOH is the lead of the HARFIR project for the Japanese side. TOH will also optimise the epitaxial Heusler alloy film growth using their combinatorial sputtering and MBE systems with the focus on in-plane anisotropy. The magnetic and electrical properties are also measured at TOH, with focus on studying the onset of any antiferromagnetic order through bulk measurements of the magnetic behaviour using world leading facilities for magnetisation reversal and high resolution detailed electrical studies of the behaviour of the alloys.

Historically, the group has a plenty of experience on the film fabrication and magnetic measurements for L10-ordered alloys such as FeAu, FePt, FeNi, etc. In particular, an alternate monatomic layer deposition technique was developed by Prof. Takanashi for the artificial fabrication of L10-FeAu which does not exist in thermal equilibrium. Recently L10– FeNi, which exists only in meteorites naturally, have successfully  been fabricated using the same technique. This technique will be useful to grow highly-ordered AF Heusler epitaxial films in this project.

The group also has many achievements in half-metallic Heusler alloy-based spintronics devices fabricated by UHV magnetron sputtering systems. Thus the group has enough facilities and sufficient experiences for this project. In addition, there are many research groups who are also working on the topic in spintronics in TOH. The group has a lot of collaboration with them in different research activities, and that will be also helpful for this project.