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HONO, Kazuhiro
Address
305-0047 1-2-1 Sengen Tsukuba Ibaraki JAPAN [Access]

External affiliations

  • Graduate School of Science and Technology, University of Tsukuba

Research

Keywords

magnetic materials, neodymium magnet, permanent magnet, rare earth magnets, spintronic materials, atom probe tomography, microstructure of metals, magnesium alloys

Before he was appointed as the president in 2022, he had 27 year research career at NIMS, mainly worked on structure-property relationships of metallic materials, including aluminum alloy, magnesium alloy, steels and magnetic materials. In the past 20 years, he has led magnetic and spintronic materials research at NIMS, including rare-earth permanent magnets, nanocrystalline soft magnets, FePt-based heat-assisted recording media, and half-metallic Heusler alloys and their devices.

researchPicture

Early in his career, he pioneered atom probe field ion microscopy (APFIM) and later three-dimensional atom probe (3DAP) characterization of metallic nanostructures to elucidate structure-property relationships of various alloys with potential industrial applications. He also contributed to the early development of laser-assisted 3D atom probe and demonstrated successful 3DAP analysis of insulator materials using UV lasers. His atomistic characterizations of solute clusters and GP zones in aluminum alloys were pioneering at the time for the study of precipitation sequences at the atomic scale. Extending this research to magnesium alloys, his group developed high-strength heat treatable wrought magnesium alloys with excellent formability. He also pioneered the atomistic characterization of amorphous alloys and their crystallization processes, and the research that elucidated the crystallization mechanism of the amorphous Fe-Si-B-Nb-Cu alloy served as a guiding principle for the subsequent development of nanocrystalline soft magnetic materials.

In the past 20 years, he has vigorously pursued the multi-scale analysis of the microstructure of rare-earth permanent magnets through the complementary use of SEM/TEM/3DAP, and established a coercivity mechanism that overturns the conventional view. Based on this, Dr. Hono's group developed a grain boundary infiltration method using eutectic alloys that dramatically improves the coercivity of neodymium magnets without using Dy. In addition, systematic TEM studies of the nanostructures of FePt thin films led to the development of FePt-C nanogranular perpendicular thin films, which proved to be the prototype of industrialized FePt-X heat-assisted magnetic recording (HAMR) media. His group has also made remarkable achievements in the search for half-metallic Heusler alloys and unprecedented high magnetoresistive performance has been demonstrated in CPP-GMR devices by atomic control of the Heusler FM/NM interfaces, which have attracted interest as potential magnetic sensor applications.

PublicationsNIMS affiliated publications since 2004.

Books
Proceedings
Presentations
Misc

Society memberships

TMS, IEEE Magnetics Society, Japan Institute for Metals, Japan Institute for Light Metals, Applied Physics Society of Japan

Awards

  • 2024 Acta Materialia Gold Medal (2024)
  • Medal with Purple Ribbon (2024)
  • Magnetics Society of Japan Award (2022)
  • Tsukuba Encouragement Prize (Research for Practical Use) (2022)
  • Honda Memorial Award, the Honda Memorial Foundation (2020)
  • The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Research Category (2020)
  • Murakami Memorial Award, the Japan Institute of Metals (2019)
  • 2018REPM Distinguished Achievement Award (2018)
  • 27th Tsukuba Award, Ibaraki Prefecture (2016)
  • IFES Fellow (The International Field Emission Society) (2016)
  • IEEE Magnetic Society Distinguished Lecturer (2015)
  • Japan Institute of Metals Hakaru Hasumoto Award (2014)
  • The Magnetic Society of Japan, Achievement Award (2013)
  • Honorary Membership of the Indian Institute of Metals (2013)
  • TMS Life Time Membership (2012)
  • TMS Fellow Award (2011)
  • The Japan Institute of Metals Distinguished Achievement Award (2011)
  • 6th Honda Frontier Award (2009)
  • Magnetic Society of Japan Outstanding Research Award (2008)
  • Light Metal Advancement Award (2003)
  • The Japan Institute of Metals Meritorious Honor Award (1997)
  • Tsukuba Encouragement Prize, Ibaraki Prefecture (1997)
  • The Acta Metallurgica et Materialia Best Paper Award for 1992 (1994)
  • Japan Institute of Metals Young Scientists Encouragement Award (1992)
  • Murakami Memorial Research Promotion Award for Young Scientists (1992)
  • Light Metals Research Promotion Award, the Japan Institute of Light Metals (1991)
  • Honda Memorial Research Promotion Award for Young Scientists (1991)
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