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Department of Chemistry, Graduate School of Science, Kyoto University

Takahiro Moriyama (Associate Professor)

Field of Expertise:
Spintronics, Spin dynamics
Research interests:
High frequency spintronic devices
Selected publications:
  1. D. C. Ralph, Y.-T. Cui, L. Q. Liu, T. Moriyama, C. Wang, and R. A. Buhrman, “Spin-transfer torque in nanoscale magnetic devices.”, Philosophical Transactions of the Royal Society A 369, 3617 (2011).
  2. L. Q. Liu, T. Moriyama, D. C. Ralph, and R. A. Buhrman, "Spin torque ferromagnetic resonance induced by the Spin Hall Effect", Physical Review Letters 106, 036601 (2011).
  3. T. Moriyama, T. Gudmundsen, P. Y. Huang, L. Liu , D. A. Muller, R. A. Buhrman , D. C. Ralph, “Tunnel Magnetoresistance and Spin Torque Switching in MgO-based Magnetic Tunnel Junctions with a Co/Ni Multilayer Electrode”, Applied Physics Letters 97, 072513 (2010).
  4. L. Liu, T. Moriyama, D. C. Ralph, and R. A. Buhrman, “Reduction of the spin-torque critical current by partially canceling the free layer demagnetization field”, Applied Physics Letters 94, 122508 (2009).
  5. X. Fan, R. Cao, T. Moriyama, W. Wang, H. W. Zhang, J. Q. Xiao, “Magnetic tunnel junction based microwave detector” Applied Physics Letters 95, 122501 (2009)
  6. T. Moriyama, X. Fan, Y. Q. Wen, H. W. Zhang, and J. Q. Xiao, "FMR spectroscopy with very large precessioin cone angle in magnetic tunnel junctions", IEEE Transactions on Magnetics 45, 2047(2009).
  7. R. Cao, T. Moriyama, W. G. Wang, X. Fan, J. Kolodzey, S. H. Chen, C. R. Chang, Y. Tserkovnyak, B. K. Nikolic, J. Q. Xiao, “Spin-Polarized Transport and Dynamics in Magnetic Tunneling Structures”, IEEE Transactions on Magnetics 45, 3434 (2009)
  8. R. Cao, X. Fan, T. Moriyama, and J. Q. Xiao, “Nonlinear effective spin-mixing conductance in Pt/Ni80Fe20/Pt thin films”, Journal of Applied Physics 105, 07C705 (2009)
  9. T. Moriyama, R. Cao, X. Fan, G. Xuan, B. K. Nikolic´, Y. Tserkovnyak, J. Kolodzey, and J. Q. Xiao, "Tunnel barrier enhanced voltage signal generated by magnetization precession of a single ferromagnetic layer", Physical Review Letters 100, 067602 (2008).
  10. Y. Tserkovnyak, T. Moriyama, and J. Q. Xiao, "Tunnel-barrier enhanced voltage induced by magnetization dynamincs", Physical Review B 78, 020401(R) (2008).
  11. T. Moriyama, R. Cao, J. Q. Xiao, J. Lu, X. R. Wang, Q. Wen, and H. W. Zhang, "Magnetization reversed by microwave in magnetic tunnel junctions", Journal of Applied Physics 103, 07A906 (2008).
  12. W. G. Wang, C. Ni, A. Rumaiz, Y. Wang, X. Fan, T. Moriyama, R. Cao, Q. Y. Wen, H. W. Zhang, and J. Q. Xiao, "Real-time evolution of tunneling magnetoresistance during annealing in CoFeB/MgO/CoFeB magnetic tunnel junctions", Applied Physics Letters 92, 152501 (2008).
  13. W. G. Wang, K. J. Yeeb, D. H. Kimc, X. R. Wang, C. Ni, T. Moriyama, A. Mathew, R. Opilae, T. Zhu, and J. Q. Xiao, "Properties Of (Zn,Cr)Te Films Fabricated By Magnetron Sputtering", Physical Review B 77, 155207 (2008).
  14. Y. Z. Liu, W. G. Wang, T. Moriyama, J. Q. Xiao, and Z. Zhang, "Direct measurement of barrier asymmetry in AlOx/ZrOy magnetic tunnel junctions using off-axis electron holography", Physical Review B 75, 134420 (2007).
  15. T. Moriyama, R. Cao, J. Q. Xiao, J. Lu, X. R. Wang, Q. Wen, and H. W. Zhang, "Microwave-assisted magnetization switching of Ni80Fe20 in magnetic tunnel junctions", Applied Physics Letters 90, 152503 (2007).
  16. M. J. Bonder, B. Srinivasan, G. Poirier, T. Moriyama, K. L. Kiick, and G. C. Hadjipanayis, "In vitro heating with polyethylene glycol coated Fe nanoparticles", Ieee Transactions on Magnetics 42, 3602 (2006).
  17. W. G. Wang, C. Ni, T. Moriyama, J. Wan, E. Nowak, and J. Q. Xiao, "Spin-polarized transport in hybrid (Zn,Cr)Te/Al2O3/Co magnetic tunnel junctions", Applied Physics Letters 88, 202501 (2006).
  18. T. Moriyama, C. Ni, W. G. Wang, X. Zhang, and J. Q. Xiao, "Tunneling magnetoresistance in (001)-oriented FeCo/MgO/FeCo magnetic tunneling junctions grown by sputtering deposition", Applied Physics Letters 88, 222503 (2006).
  19. T. Moriyama, S. Mitani, T. Seki, T. Shima, K. Takanashi, and A. Sakuma, "Magnetic tunnel junctions with L1(0)-ordered FePt alloy electrodes", Journal of Applied Physics 95, 6789 (2004).
  20. S. Mitani, T. Moriyama, and K. Takanashi, "Fe/MgO/FeCo(100) epitaxial magnetic tunnel junctions prepared by using in situ plasma oxidation", Journal of Applied Physics 93, 8041 (2003).
  21. S. Mitani, T. Moriyama, and K. Takanashi, "Structure and tunnel magnetoresistance in Fe/MgF2/Co junctions with an oxide seed layer on an Fe bottom electrode", Journal of Applied Physics 91, 7200 (2002).
  22. T. Moriyama, S. Mitani, and K. Takanashi, "Tunnel Magnetoresistance in Fe/MgO/MgF2/Co Junctions", Journal of the Magnetics Society of Japan 26, 405 (2002).
Education:
Ph.D. Physics (Experimental condensed matter), University of Delaware, 8/2008
M.Eng. Materials Science, Tohoku University, 3/2003
B.S. Materials Science, Tohoku University, 3/2001
Professional appointments:
Assistant Professor, Kyoto University, Institute for Chemical Research, 8/2012
Sr. Characterization Engineer, TDK-Headway Technologies, Inc. R&D, 11/2011
Postdoctoral Associate, Cornell University, Physics and Applied Physics, 8/2008
Research Assistant, University of Delaware, Physics, 9/2004
Award & Honors:
Scholastic Excellence Named In Dean's List, University of Delaware, 9/2004
Contact information:
Office: Rm# S-233C, Institute for Chemical Research, Kyoto University
Tel#: +81-774-38-3106
Email: mtaka + @scl.kyoto-u.ac.jp
Links:
Curriculum vitae
Ono laboratory web page
Nanospintronics Laboratory (internal link)

This page was last modified on 12 April 2016.

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