Masato Sagawa

Masato Sagawa (佐川眞人; born August 3, 1943, in Tokushima, Japan) is a Japanese scientist and entrepreneur, and the inventor of sintered permanent magnet NdFeB. Sagawa was awarded the Japan Prize in 2012 for inventing and developing the highest performing sintered Nd-Fe-B type permanent magnets and contributing to energy conservation.[1][2][3] Dr. Sagawa is the president of NDFEB Corporation at Kyoto, Japan.

Masato Sagawa 佐川眞人
Born (1943-08-03) 3 August 1943
Tokushima, Japan
NationalityJapanese
Citizenship Japan
Alma materKobe University (B.A.) (M.S.) Tohoku University (Doctor Eng.)
Spouse(s)Hisako Sagawa 久子
AwardsAsahi Prize (1990)
Japan Prize (2012)
Queen Elizabeth Prize for Engineering (2022)
Scientific career
FieldsMetallurgy, Magnetic Materials, Sustainable energy

Career

The sintered NdFeB was initially conceived and developed by Sagawa when he was with Fujitsu Laboratories where he worked from 1972 to 1982. Without his supervisor's support for the new magnetic compound, Sagawa resigned in 1981, and then joined Sumitomo Special Metals. Within several months after joining Sumitomo Special Metals in 1982, the strongest sintered NdFeB magnet was developed. Dr. Sagawa presented the new discovery of NdFeB magnet during the Magnetism and Magnetic Materials Conference in Nov. 1983 in Pittsburgh, Pennsylvania.[2][4]

In 1988, Sagawa founded Intermetallics, a research and development company devoted to the development of neodymium magnets.[3][5][6] Dr. Sagawa founded NDFEB Corporation in 2012 and he is the president of NDFEB Corporation at Kyoto, Japan. In additional to receiving the Japan Prize in 2012, Dr. Sagawa is a co-recipient of IEEE Medal for Environmental and Safety Technologies "for contributions to the development of rare earth-iron-boron permanent magnets for use in high-efficiency motors, generators, and other devices.” [7][8]

Dr. Sagawa has worked on improving the NdFeB magnetic materials’ magnetic properties; with over 60 patents for his work related to NdFeB.The 2022 Queen Elizabeth Prize for Engineering was awarded to him for the discovery, development and global commercialisation of the neodymium-iron-boron (Nd-Fe-B) magnet, a novel and extremely strong magnet.[9]  

Dr. Sagawa demonstrates how 1 gram of NdFeB magnet disc can firmly hold ~1900 grams of water bottle.

Major awards and honors

References
  1. "Laureates of the Japan Prize: Masato Sagawa, Dr. Eng". The Japan Prize Foundation. Retrieved 29 July 2015.
  2. Sagawa, M.; Fujimura, S.; Togawa, N.; Yamamoto, H.; Matsuura, Y. (1984). "New material for permanent magnets on a base of Nd and Fe (invited)". Journal of Applied Physics. 55 (6): 2083–2087. doi:10.1063/1.333572.
  3. Gutfleisch, Oliver; Willard, Matthew A.; Brück, Ekkes; Chen, Christina H.; Sankar, S. G.; Liu, J. Ping (15 February 2011). "Magnetic Materials and Devices for the 21st Century: Stronger, Lighter, and More Energy Efficient". Advanced Materials. 23 (7): 821–842. doi:10.1002/adma.201002180. PMID 21294168.
  4. Sagawa, M.; Fujimura, S.; Yamamoto, H.; Matsuura, Y.; Hiraga, K. (September 1984). "Permanent magnet materials based on the rare earth-iron-boron tetragonal compounds". IEEE Transactions on Magnetics. 20 (5): 1584–1589. CiteSeerX 10.1.1.533.8984. doi:10.1109/TMAG.1984.1063214.
  5. "Achievement : Developing the world's highest performing Nd-Fe-B type permanent magnet and contributing to energy conservation" (PDF). The Japan Prize Foundation. Retrieved 29 July 2015.
  6. "Changing the EV and the World with the Motor". Mitsubishi Corp. Archived from the original on 8 October 2015. Retrieved 29 July 2015.
  7. "Masato Sagawa Co-Winner of the IEEE Medal for Environmental and Safety Technologies (2022)".
  8. "2022 IEEE Medal & Recognition Recipients 6.IEEE Medal for Environmental and Safety Technologies".
  9. "Queen Elizabeth Prize for Engineering honours magnet pioneer". BBC News. 1 February 2022.
  10. 大同特殊鋼株式会社プレスリリース　佐川眞人顧問が「NIMS Award 2018」を受賞しました2018年8月25日閲覧
  11. "Masato Sagawa Winner of the Fray Award - FLOGEN Stars Outreach".
  12. "Masato Sagawa Co-Winner of the IEEE Medal for Environmental and Safety Technologies (2022)".
  13. "Queen Elizabeth Prize for Engineering honours magnet pioneer". BBC News. 1 February 2022.
Dr. Sagawa, and his wife Hisako (久子), and his granddaughter Nika (ニカ).
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