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JST Press Release

December 17, 2015
Japan Science and Technology Agency (JST)
5-3, Yonbancho, Chiyoda-ku, Tokyo 102-8666

Detection and control of the number of magnetic twists formed in a magnet with chiral crystalline structure:
Towards significant increase of memory density of electric device

Researchers from Osaka Prefecture University together with colleagues from Japan, UK and Russia have undertaken research on magnetic materials which could provide significant improvement for future magnetic memory, sensor and processing devices. In a paper published online on 17th December in Physical Review B (Rapid communication), researchers present work on chiral magnetic materials where dozens or hundreds of repeated spiral are formed and discrete changes in the number of twists are detected electrically. This achievement will enable the applications of magnetic devices operated in multi-valued code rather than binary code that can handle the enormous amount of data processing or hold much higher memory density.

Researcher Information

Research Area “Innovative Nano-electronics through Interdisciplinary Collaboration among Material, Device and System Layers”
Research Theme “Spin Phase Electronics using chiral magnetic order”

Journal Information

Y. Togawa, T. Koyama, Y. Nishimori, Y. Matsumoto, S. McVitie, D. McGrouther, R. L. Stamps, Y. Kousaka, J. Akimitsu, S. Nishihara, K. Inoue, I. G. Bostrem, Vl. E. Sinitsyn, A. S. Ovchinnikov, and J. Kishine. “Magnetic soliton confinement and discretization effects arising from macroscopic coherence in a chiral spin soliton lattice”. Physical Review B, 92, 220412(R) (2014), Published online 17 December 2015, doi: 10.1103/PhysRevB.92.220412.


[About Research]
Yoshihiko Togawa, Ph.D.
Associate Professor, Department of Physics and Electronics, Osaka Prefecture University, Honorary Research Fellow, School of Physics and Astronomy, University of Glasgow
URL: http://www.pe.osakafu-u.ac.jp/pe8/

Katsuya Inoue, Ph.D.
Professor, Graduate School of Science, Hiroshima University, Group Leader, Centre for Chiral Science, Hiroshima University
URL: http://home.hiroshima-u.ac.jp/kotai/KibanS/t005/t005/index_e.html

Jun-ichiro Kishine, Ph.D.
Professor, Division of Natural and Environmental Sciences, The Open University of Japan

[About Program]
Sofia Saori Suzuki
Green Innovation Group, Department of Innovation Research, JST


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