Updated on 2020/10/20

写真a

 
TANAKA YoIchiro
 
Title
Professor(Moving Out or Retirement)
Contact information
メールアドレス
Laboratory Phone number
+81-238-26-3719
　
Laboratory Fax number
+81-238-26-3772
　
Departments URL
http://mot.yz.yamagata-u.ac.jp/en/tanaka/
　
Profile
Since 1983, Dr. Yoichiro Tanaka had worked in Toshiba on technology development and business of storage products. The main contributions have been on the storage technology development for information technology (IT) evolution. Drawing on his expertise in magnetic recording physics, he had played a key role in Toshiba's technological breakthroughs in HDD recording technology for high areal recording density. Among his achievements and contributions are the research and development of a GMR head and granular magnetic recording media. However, his most notable achievement was the 20 years he devoted to the proof and development of practical perpendicular magnetic recording (PMR) technology, the most important HDD technology breakthrough of the last decade or more, and the successful realization of the world's first PMR HDD in 2005. Dr. Tanaka had lead the architecture development of hybrid storage system with NAND flash memory in R&D Center in Silicon Valley, USA since 2009. Given this background, Dr. Yoichiro Tanaka has been working on research of advanced computing and storage architecture for medical science in collaboration with US Universities since 2015. Since November 2016, He has been a professor at Graduate School of Science and Engineering, Yamagata University. He has been Director of ICT Industry Collaborations, Research Institute of Regional Value Creation Management since April 2017 and Project Director of Yamagata Prefecture IoT Acceleration Laboratory since August 2017. He has been Deputy Director of Business Research Institute for Glocal Innovation since January 2018. He currently serves an advisor role for ImPACT, Japanese government-funded program, and Research Evaluation Committee for National Institute for Material Science. He has also served as a committee member of domestic and international academic conferences such as Magnetic Society of Japan, IEICE, IEEE, ASME.

Research Areas

  • Life Science / Medical systems

  • Informatics / Computer system

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electric and electronic materials

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Communication and network engineering

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment

Graduating School

  • Tohoku University, Faculty of Engineering

    1981.03, Graduated

Graduate School

  • Tohoku University, Graduate School, Division of Engineering

    Master's Course, 1983.03, Completed

  • Tohoku University, Graduate School, Division of Engineering

    Doctor's Course, 2006.09, Completed

External Career

  • Toshiba Corporation, Researcher, 1983.04 - 1988.09

  • Toshiba Corporation, Researcher, 1988.04 - 1997.03

  • University of Minnesota, Researcher, 1988.09 - 1990.03

  • Toshiba Corporation, Chief Researcher, 1997.04 - 1997.09

  • Toshiba Corporation, Head, 1997.10 - 2002.09

  • Toshiba Corporation, Manager, 2002.10 - 2006.03

  • Toshiba America Information System Inc., Vice President, 2009.07 - 2011.07

  • Toshiba Corporation, Manager, 2011.08 - 2013.09

  • Toshiba Corporation, Senior Fellow, 2014.04 - 2016.03

  • Toshiba Corporation, Senior Fellow, 2016.04 - 2016.10

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Academic Society Affiliations

  • IEEE

  • Magnetic Society of Japan

  • ASME

  • IEICE

  • The Database Society of Japan

  • Japan Association for Management Systems

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Papers

  • Characterizing Advanced Recording Technology Assets with Hyper-Scale Applications, IEEE Trans. Magn., Vol.52(No.2) 1-4, 2016.01

    Yoichiro Tanaka

    Single Author

  • Perpendicular Recording Technology: from research to commercialization, Proceedings of The IEEE, Vol.96(No.11) 1754-1760, 2008.11

    Yoichiro Tanaka

    Single Author

  • Fundamental features of perpendicular magnetic recording and design considerations for future portable HDD integration, IEEE Trans. Magn., Vol.41(No.10) 2834-2838, 2005.10

    Yoichiro Tanaka

    Single Author

  • Large magnetoresistance ratio of 10% by Fe50Co50 layers for current-confined-path current-perpendicular-to-plane giant magnetoresistance spin-valve films, Appl. Phys. Lett., 87 082507, 2005

    Hideaki Fukuzawa, Hiromi Yuasa, Susumu Hashimoto, Hitoshi Iwasaki, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • Recording performance and system integration of perpendicular magnetic recording, J. Magn. Magn. Mater., 287 468-474, 2005

    Yoichiro Tanaka

    Single Author

  • Practical resolution analysis of perpendicular recording, J. Magn. Magn. Mater., 287 149-152, 2005

    Yuka Aoyagi, Tomoko K. Taguchi, Masayuki Takagishi, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • Nano-constricted structure for current-confined-path in current-perpendicular-to-plane spin valves with high magnetoresistance, J. Appl. Phys., 97 10C509, 2005

    Hideaki Fukuzawa, Hiromi Yuasa, Katsuhiko Koi, Hitoshi Iwasaki, Yoichiro Tanaka, Y. K. Takahashi, K. Hono

    Multiple Authorship (Including Foreigners)

  • MR ratio enhancement by NOL current-confined-path structure in CPP spinvalves, IEEE Trans. Magn., Vol.40(No.4) 2236-2238, 2004.07

    Hideaki Fukuzawa, Hiromi Yuasa, Susumu Hashimoto, Katsuhiko Koi, Hitoshi Iwasaki, Masayuki Takagishi, Yoichiro Tanaka, Masashi Sahashi

    Multiple Authorship (Including Foreigners)

  • Characterization of GMR nonlinear response and the impact on BER in perpendicular magnetic recording, IEEE Trans. Magn., Vol.40(No.4) 2582-2584, 2004.07

    Akihiko Takeo, Tomoko Taguchi, Yuji Sakai, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • Observation of Breakdown Processes of Magnetic Read Head Using the Magnetic Force Microscope, IEICE Trans. Electron., C , Vol.J87-C(No.5) 480-486, 2004.05

    Multiple Authorship (Only Japanese)

  • Measuring magnetic field saturation and its site dependence in a recording head with a magnetic force microscope, IEEE Trans. Magn., Vol.40(No.3) 1708-1711, 2004.05

    Masayuki Abe, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • Measuring High Frequency Magnetic Field of Recording Head with the Magnetic Force Microscope, J-85-C(No.2) 94-99, 2002.02

    Masayuki Abe, Yoichiro Tanaka

    Multiple Authorship (Only Japanese)

  • A study of high-frequency characteristics of write heads with the AC-phase high frequency magnetic force microscope, IEEE Trans. Magn., Vol.38(No.1) 45-49, 2002.01

    Masayuki Abe, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • Dynamic Read/Write performance characterization of perpendicular recording, IEEE Trans. Magn., Vol.38(No.1) 68-71, 2002.01

    Yoichiro Tanaka, Akihiko Takeo, Takashi Hikosaka

    Multiple Authorship (Including Foreigners)

  • Low noise FeAlSi soft magnetic under-layer for CoPtCrO double-layered perpendicular recording media, IEEE Trans. Magn., Vol.37(No.4) 1586-1588, 2001.07

    Takashi Hikosaka, Futoshi Nakamura, Soichi Oikawa, Akihiko Takeo, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • High frequency write head measurement with the phase detection magnetic force microscope, J. Appl. Phys., Vol.89(No.11) 6766-6768, 2001.06

    Masayuki Abe, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • Perpendicular recording with high squareness CoPtCrO media, J. Magn. Magn. Mater., 235, pp.253-258, 2001, 235 253-258, 2001

    Yoichiro Tanaka, Takashi Hikosaka

    Multiple Authorship (Including Foreigners)

  • Characterization of Perpendicular Recording Media of CoPtCrO Granular Thin Films, Journa of the Magnetic Society of Japan, Vol.25(No.3-2) 226-229, 2001

    R. Sbiaa, E. Ahmad, T.Suzuki, A. Takeo, Y.Tanaka

    Multiple Authorship (Including Foreigners)

  • High performance CoPtCrO single layered perpendicular media with no recording demagnetization, IEEE Trans. Magn., Vol.36(No.5) 2393-2395, 2000.09

    Soichi Oikawa, Akihiko Takeo, Takashi Hikosaka, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • A new design to suppress recording demagnetization for perpendicular recording, IEEE Trans. Magn., Vol.36(No.5) 2378-2380, 2000.09

    Akihiko Takeo, Soichi Oikawa, Takashi Hikosaka, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • Low-Temperature Meassirement Analysis of Magnetic Non-uniformity, Journal of The Magnetic Society of Japan, 24(No.4-2) 371-347, 2000

    Hideo Ogiwara, Takashi Hikosaka, Yoichiro Tanaka

    Multiple Authorship (Only Japanese)

  • Quantitative MFM study on partial erasure behavior of longitudinal recording, IEEE Trans. Magn., Vol.34(No.4) 1973-1975, 1998.07

    Tomoko Komai Taguchi, Akihiko Takeo, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • Granular Magnetic Recording Media, Granular Magnetic Recording Media, Vol.22(No.10) 1301-1308, 1998

    Multiple Authorship (Only Japanese)

  • Error rate performance of high density recording using narrow track spin-valve GMR head, IEEE Trans. Magn., Vol.32(No.5) 3887-3889, 1996.09

    Kazuhito Shimomura, Yusuke Ohinata, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • The effects of head configuration on write resolution for submicron track recording, IEEE Trans. Magn., Vol.31(No.6) 2684-2686, 1995.11

    Yoichiro Tanaka, Tomoko Komai Taguchi

    Multiple Authorship (Including Foreigners)

  • Oxygen effect on the microstructure and magnetic properties of binary CoPt thin films for perpendicular recording, IEEE Trans. Magn., Vol.30(No.6) 4026-4028, 1994.11

    Takashi Hikosaka, Tomoko Komai, Yoichiro Tanaka,

    Multiple Authorship (Including Foreigners)

  • Side writing phenomena for submicron track width recording, Journal of The Magnetic Society of Japan, Vol.18(Supplement, No.S1) 567-570, 1994

    Tomoko Komai Taguchi, Takashi Hikosaka, Yusuke Ohinata, Norio Nakamura, Jun-ichi Akiyama, Yoichiro Tanaka

    Multiple Authorship (Including Foreigners)

  • A study of write and read spacing loss for perpendicular recording, Journal of The Magnetic Society of Japan, Vol.17(Supplement, No.S2) 23-28, 1993

    Multiple Authorship (Only Japanese)

  • Microstructure and magnetic properties of Co-Pt thin films, Journal of The Magnetic Society of Japan, Vol.15(Supplement, No.S2) 609-613, 1991

    Takashi Hikosaka, Yoichiro Tanaka, Toshihiko Ohta, Reiji Nishikawa

    Multiple Authorship (Including Foreigners)

  • Measurement and modeling of noise in DC-erased thin film media, IEEE Trans. Magn., Vol.26(No.5) 2149-2151, 1990.09

    Martin Vos, Yoichiro Tanaka, Jack H. Judy

    Multiple Authorship (Including Foreigners)

  • Pass wear durability and defect behavior for Co-Cr thin film media, Journal of The Magnetic Society of Japan, Vol.13(Supplement, No.S1) 225-230, 1989

    Masayuki Kanamaru, Yoichiro Tanaka, Hisashi Itoh, Reiji Nishikawa

    Multiple Authorship (Including Foreigners)

  • Spacing loss and change in wave shape of perpendicular magnetic recording in the narrow spacing region, IEEE Trans. Magn., Vol.24(No.6) 2473-2475, 1988.11

    Yoshiaki Sonobe, Yoichiro Tanaka, Reiji Nishikawa

    Multiple Authorship (Including Foreigners)

  • Inclining columnar structure in Co-Cr films prepared by roll magnetic sputtering, IEEE Trans. Magn., Vol.23(No.5) 2046-2048, 1987.09

    Yoichiro Tanaka, Hisashi Ito, Tomiya Sonoda, Reiji Nishikawa

    Multiple Authorship (Including Foreigners)

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Books

  • Advanced Technologies of Perpendicular Magnetic Recording, 2007.07

Review Papers

  • Large Scale Data Management and Future Storage Prospects, The Magnetic Society of Japan, Magnetics Japan, 12(4) 192-196, 2017.08

    Yoichiro Tanaka