The partners in the HARFIR research project are pleased to announce that the 4th Japan-EU Open Workshop on Heusler Alloy Replacement for Iridium (‘HARFIR’) will take place on Friday, 6th November 2015 at the High Energy Accelerator Research Organization (KEK) in Tsukuba, Japan. All interested parties are invited to attend.
The purpose of the HARFIR project is to develop rare metal-free antiferromagnetic Heusler alloy films to replace antiferromagnetic IrMn films which have been widely used in spintronic devices including read heads in hard disk drives. Ir-free antiferromagnetic Heusler alloy films consisting only of ubiquitous elements will be developed by joint collaboration among the researchers from laboratories in Japan and the European Union, leading to the reduction of Ir consumption.
This Open Workshop intends to provide current understanding of the exchange bias from the viewpoint of both theoretical and experimental aspects. From the project members, recent progress for the investigation of antiferromagnetic Heusler alloy films will be reported. In addition, experts from outside the project have been invited to present their latest research topics relating to either exchange bias or Heusler compounds.
This workshop offers an opportunity for European and Japanese researchers, including students and postdocs, to access the latest research topics and to discuss their results with the world-leaders, and encourage future collaborations.
Kanta Ono (Japanese coordinator)
Atsufumi Hirohata (EU coordinator)
8:20 Registration Opens
9:00 Opening……….K. Takanashi
9:10 Opening Address……….Prof. Kuroda, Program officer of HARFIR pj
9:20 Exchange bias effects in bilayers using antiferromagnetic Heusler alloys……….T. Kubota (Tohoku Univ.)
9:50 Spin transport and spin caloric effects in magnetic nanostructures……….G. Reiss (Uni. Bielefeld)
10:50 Magnetic and Structural Characterisation of Heusler Alloy Films……….A. Hirohata (Univ. York)
11:20 TBD……….K. Ono (High Energy Accelerator Research Organization)
12:00 – 13:10 Lunch (Lunch meeting for pj members, Invited speakers and Prof. Kuroda)
13:20 Effects of degree of order on the magnetic properties for Heusler alloys……….R. Umetsu (Tohoku Univ.)
14:00 Perpendicular magnetization epitaxial films using Heusler-derived materials……….H. Sukegawa (National Institute for Materials Science)
15:00 TBD……….L. Szunyaogh (Budapest Univ.)
15:30 Magnonis spin currents in ferri-, ferro-, and antiferromagnets……….U. Nowak (Univ. Konstanz)
16:00 Closing……….K. O’Grady (Univ. York)
There is no charge for attendance at the workshop, but participants must make their own travel and accommodation arrangements. Official registration will take place at the Workshop.
The following hotels are close to the Tsukuba Railway Station and are being used by workshop participants:
You can take a public bus to KEK at bus stop #3 at the Tsukuba Center Bus Station just in front of the Tsukuba Railway Station. The fare is JPY 300, to be paid when you get off the bus at “High Energy Accelerator Research Organization”. It takes about 20 min. A timetable of the bus service can be found at: http://pfwww.kek.jp/users_info/access/busloce.html
You can also take a taxi from the Hotel or the Tsukuba Railway Station. It takes about 15 min. and the fare is about JPY 3,000.
Enquiries about the Workshop should be addressed to Prof Nobuhito Inami at the Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK).
About the HARFIR project
The HARFIR project intends to develop antiferromagnetic Heusler alloy films to replace the antiferromagnetic alloy IrMn. It is widely recognised that spin electronic technologies will displace volatile semiconductor memory technology within the next decade. Therefore the lack of availability of one crucial element is a critical issue to be solved urgently.
We therefore aim to reduce the cost of an antiferromagnetic film by a factor of 10 as compared with the current IrMn. We will combine our expertise in ab initio calculations and Heusler alloy film growth techniques to seek a highly anisotropic films. These films will be characterised both structurally and magnetically using synchrotron beamlines, high-resolution (scanning) transmission electron microscopy and highly sensitive electrical and magnetic measurement facilities available within the consortium.
We will demonstrate a device concept with the developed films at the end of this project, showing an exchange bias larger than 1 kOe in sheet form and a blocking temperature above 300K.
Project website: https://harfir.hosted.york.ac.uk/