Masaya KODZUKA
PhD Student (Final year)
Graduate School of Pure and Applied Sciences, The University of Tsukuba

email: KODZUKA.Masaya@nims.go.jp
Phone: +81-298-59-2793 Fax: +81-298-59-2701

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Education

• 2007.3 B.S. Nagaoka University of Technology, Department of Materials Science and Technology
• 2009.3 M.S. University of Tsukuba, Department of Materials Science
• 2009.4- PhD student University of Tsukuba (will finish in 2012 March)

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Reserch interests

• Atom probe field ion microscopy
• Transmission electron microscopy

Crrent subject

Application of laser assited atom probe to microstucture analysis of Thin film devices

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Publication

• 3DAP analysis of (Ga,Mn)As diluted magnetic semiconductor thin film
  M. Kodzuka, T. Ohkubo, K. Hono, F. Matsukura and H. Ohno, Ultramicroscopy 109, pp. 644-648 (2009).
  
• Laser assisted atom probe analysis of thin films on insulating substrates
  M. Kodzuka, T. Ohkubo and K. Hono, Ultramicroscopy 111, 557 (2011).
  
• Effects of B composition on TMR ratio and microstructure of CoFeB/MgO/CoFeB pseudo-spin-valve magnetic tunnel junctions
  M. Kodzuka, T. Ohkubo, K. Hono, S. Ikeda, H. D. Gan and H. Ohno, J. Appl. Phys. (2011), accepted.
  


• Giant Peltier Effect in a Submicron-Sized Cu-Ni/Au Junction with Nanometer-Scale Phase Separation
  A. Sugihara, M. Kodzuka, K. Yakushiji, H. Kubota, S. Yuasa, A. Yamamoto, K. Ando, K. Takanashi, T. Ohkubo, K. Hono, and A. Fukushima, Appl. Physics Express 3 , art. no. 065204 (2010).
• Composition and Non-Equilibrium Crystallization in Partially Devitrified Co-rich Soft Magnetic Nanocomposite Alloys
  P. R. Ohodnicki, Jr, Y. L. Qin, D. E. Laughlin, M. E. McHenry, M. Kodzuka, T. Ohkubo, K. Hono and M.A. Willard, Acta Mater. 57, pp. 87-96 (2009)
• Demonstration of half-metallicity in fermi-level-tuned heusler alloy Co₂FeAl_0.5Si_0.5 at room temperature
  R. Shan, H. Sukegawa, W. H. Wang, M. Kodzuka, T. Furubayashi, T. Ohkubo, S. Mitani,K. Inomata, and K. Hono, Phys. Rev. Lett. 102, art. no. 246601 (2009) .
  
• Coherent tunneling and giant tunneling magnetoresistance in Co₂ FeAl/MgO/CoFe magnetic tunneling junctions
  W. Wang, E. Liu, M. Kodzuka, H. Sukegawa, M. Wojcik, E. Jedryka, G. H. Wu, K. Inomata, S. Mitani, and K. Hono, Phys. Rev. B, 81, art. no. 140402 (2010).
  
• Laser-assisted atom probe analysis of zirconia/spinel nanocomposite ceramics
  Y.M. Chen, T. Ohkubo, M. Kodzuka, K. Morita and K. Hono, Scripta Mater. 61,pp. 693-696 (2010) .
  
• Laser-assisted three-dimensional atom probe analysis of dopant distribution in Gd-doped CeO₂
  F. Li, T. Ohkubo, Y.M. Chen, M. Kodzuka, F. Ye, D.R. Ou, T. Mori and K. Hono, Scripta Mater. 63, pp. 332-335 (2010).
  
• Laser-assisted atom probe analysis of bulk insulating ceramics
  T. Ohkubo, Y.M. Chen, M. Kodzuka, K. Oh-ishi, and K. Hono, Mater. Res. Soc. Symp. Proc. 1231, pp. 1-6 (2010).
  
• Quantitative atom probe analyses of rare-earth-doped ceria by femtosecond pulsed laser
  F. Li, T. Ohkubo, Y. M. Chen, M. Kodzuka and K. Hono, Ultramicroscopy 111, 589 (2011).
  
• Broadening the applications of the atom probe technique by ultraviolet femtosecond laser
  K. Hono, T. Ohkubo, Y.M. Chen, M. Kodzuka, K. Oh-ishi, H. Sepehri-Amin, F. Li, T. Kinno, S. Tomiya, Y. Kanitani, Ultramicroscopy 111, 576 (2011).