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Kiyonori Suzuki

Kiyonori Suzuki

Professor & Deputy Head, Materials Science and Engineering
Kiyonori.Suzuki@monash.edu

BEng 1986, MEng 1988, PhD 1997 (UNSW)

My research is primarily directed towards the magnetic properties of non-equilibrium and metastable materials, with particular emphasis placed on nanostructured materials for electromagnetic device applications. The key elements involved in this area of research are nanostructure-magnetic properties relationships, nanostructural formation mechanisms and magnetism in nanostructured systems (e.g., random anisotropy and exchange-spring effects). Major experimental techniques employed in my research include melt-spinning, sputtering, electron microscopy, atomic/magnetic force microscopy, thermal analysis, ac-susceptometry, small-angle neutron scattering and Mössbauer spectroscopy. Successful outcomes from my research in this field include the development of nanocrystalline Fe-M-B (M = early transition metal) soft magnetics alloys (US Patents No. 5449419 and No. 5474624) and the development of a two-phase random anisotropy model. I am also interested in other functional materials in the area of sustainable energy technologies such as hydrogen storage and permeation alloys. Recent research topics are summarised as follows:

  • Nanostructured soft magnetic materials
  • Nanocomposite exchange-spring magnets
  • Magneto-transport properties in magnetic materials
  • Hydrogen storage and hydrogen-induced effects

Publications:

  • K. Suzuki, J. W. Cochrane, K. Aoki and J. M. Cadogan, Journal of Magnetism and Magnetic Materials, Vol. 242 (2002) pp. 273-275. "Magnetoresistance of nanocrystallized amorphous Fe-Zr-(Ru) alloys"
  • K. Suzuki, K. Ishikawa and K. Aoki, Materials Transactions JIM, Vol. 41 (2000) pp. 581-584. “Degradation of LaNi5 and LaNi4.7Al0.3 hydrogen-absorbing alloys by cycling”
  • K. Suzuki, J. M. Cadogan, M. Uehara, S. Hirosawa and H. Kanekiyo, Journal of Applied Physics, Vol. 85 (1999) pp. 5914-5916. “Formation and decomposition of Fe3B/Nd2Fe14B nanocomposite structure in Fe-Nd-B-Cr melt-spun ribbons under isothermal annealing”
  • Magneto-transport properties in magnetic materials:
  • V. Markovich, E. Rozenberg, A.I. Shames, G. Gorodetsky, I. Fita, K. Suzuki, R. Puzniak, D.A.Shulyatev and Ya. M. Mukovskii, Physical Review B, Vol. 65 (2002) 144402. “Magnetic, transport and ferromagnetic resonance properties of La0.82Ca0.18MnO3 single crystal”
  • Hydrogen storage and hydrogen-induced effects:
  • K. Suzuki, K. Ishikawa, M. Dilixiati, J. M. Cadogan and K. Aoki, Journal of Applied Physics, Vol. 93 (2003) pp. 7658-7660. “Magnetic properties of hydrogen-induced amorphous YFe2”
  • K. Ishikawa, K. Hashi, K. Suzuki and K. Aoki, Journal of Alloys and Compounds, Vol. 330 (2002) pp. 543-546. “Hydrogen absorption properties of Ti3Al based ternary alloys”
  • K. Hashi, K. Ishikawa, K. Suzuki and K. Aoki, Scripta Materialia, Vol. 44 (2001) pp. 2591-2595. “Hydrogen-induced amorphization in off-stoichiometric Ti3Al"
  • C. Vecchini, O. Moze, K. Suzuki, P. K. Pranzas, J. Weissmüller and A. Michels, Applied Physics Letters, Vol. 87 (2005) pp. 202509-1-3. “Neutron scattering from dipole-field-induced spin disorder in Nanoperm”
  • N. Ito and K. Suzuki, Journal of Applied Physics, Vol. 97 (2005) pp. 10F503. “Improvement of magnetic softness in nanocrystalline soft magnetic materials by rotating magnetic field annealing”
  • A. Michels, C. Vecchini, O. Moze, K. Suzuki, J. M. Cadogan, P. K. Pranzas and J. Weissmüller, Europhysics Letters, Vol. 72 (2005) pp. 249-255. “Dipole-field induced spin disorder in a nanocomposite soft magnet”
  • V. Markovich, I. Fita, R. Puzniak, A. Wisniewski, K. Suzuki, J. W. Cochrane, Y. Yuzhelevskii, Ya. M. Mukovskii and G. Gorodetsky, Physical Review B, Vol. 71 (2005) pp. 224409-1-9. “Pressure effects on the magnetic and transport properties of Pr1-xSrxMnO3 crystals near the percolation threshold”
  • K. Suzuki, Chapter 10 in Handbook of Advanced Magnetic Materials: I. Nanostructural Effects, edited by Y. Liu, D. J. Sellmyer and D. Shindo (Kluwer Academic Publishers, Dordrecht, 2005) pp. 338-372. [ISBN 1-4020-7983-4] “Processing and modeling of novel nanocrystalline soft magnetic materials”
  • Nanocomposite exchange-spring magnets:
  • K. Suzuki, J. M. Cadogan, M. Uehara, S. Hirosawa and H. Kanekiyo, Scripta Materialia, Vol. 42 (2000) pp. 487-492. “Effect of Cr content on decomposition behaviour of amorphous Nd5Fe74Cr3B18”
  • Nanostructured soft magnetic materials:
  • K. Suzuki and G. Herzer, Chapter 13 in Advanced Magnetic Nanostructures, edited by D. Sellmyer and R. Skomski (Springer, Berlin, in press). “Soft magnetic nanostructures and applications”
  • K. Suzuki, NATO Science Series II: Mathematics, Physics and Chemistry, Vol. 184 (2005) pp. 1-14. “Fe-M-B (M = IVa to VIa metal) nanocrystalline soft magnetic materials: A review of alloy development”
  • K. Suzuki, N. Ito, J. S. Garitaonandia and J. D. Cashion, Journal of Applied Physics, in press. “High saturation magnetization and soft magnetic properties of nanocrystalline (Fe,Co)90Zr7B3 alloys annealed under a rotating magnetic field”
  • N. Ito, J. S. Garitaonandia, K. Suzuki and J. D. Cashion, Journal of Magnetism and Magnetic Materials, in press. “Soft magnetic properties of nanocrystalline Fe94-x Nb6 Bx (x = 10, 12, 14) alloys annealed in a rotating magnetic field”
  • J. C. Shih, A. J. Saldanha, K. Suzuki, T. Shoji, A. Kato and S. Tajima, Journal of Applied Physics, in press. “Magnetic hardening in Fe3B/Nd2Fe14B nanocomposite magnets induced by rapid thermal annealing”
  • K. Suzuki, J. M. Cadogan and K. Aoki, Journal of Magnetism and Magnetic Materials, Vol. 226 (2001) pp. 1481-1483. “Mössbauer study of Nd5 Fe77 -xCrxB18 (x = 0, 3 and 5) nanocomposite magnets”

Research Interests:

  • magnetic properties of non-equilibrium and metastable materials
  • nanostructured materials for electromagnetic device applications