WELCOME!

We are studying thin film fabrication processes, such as the metal organic decomposition (MOD) method and laser assisted MOD method. The MOD method is promising for high quality oxide magnetic films. One of the most significant result in our laboratory is bismuth-substituted iron garnet films, which are promising materials for MO applications, spintronic devices, microwave devices, etc. We are also developing characterization techniques utilizing magneto-optical effects, such as MO imaging technique, MO spectroscopy, etc. Recently, we have started a research on MO diffractive deep neural network device.

What's new!

RESEARCH

RECENT PUBLICATIONS

  1. Helicity-dependent all-optical switching in Bi,Ga-substituted rare-earth iron garnet films driven by orbital angular moment
    A. Hata, R. Asatani, S. Suzuki, M. A. A. Masud, H. Sakaguchi, J. Okabayashi, S. Isogami, and T. Ishibashi,
    Advanced Optical Materials, e71794, 2026. (accepted on 2 September 2026) New!
  2. Type-II-like ultrafast demagnetization behavior in NiCo2O4 thin films
     R. Takahashi, K. Yamada, H. Singh, K. Watanabe, J. Igarashi, J. Hohlfeld, J. Gorchon, G. Malinowski, D. Kan, Y. Shimakawa, T. Ishibashi, S. Mangin, and H. Wadati,
    Appl. Phys. Lett., 2026. (accepted on 13 August 2026) New!
  3. Control of angular momentum of bismuth, gallium-substituted neodymium iron garnets
     M. A. A. Masud, M. Kawahara, F. Z. Chafi, M. Nishikawa, and T. Ishibashi,
    Jpn. J. Appl. Phys., 65, 16SP06, 2026. (accepted on 12 August 2026) New!
  4. Monte Carlo Optimization for Real-Time Magnetic Domain Learning in Magneto-Optical Diffractive Deep Neural Networks
     F. Z. Chafi, T. Matsuya, H. Sakaguchi, K. Watanabe, T. Ishibashi,
    J. Eur. Opt. Society-Rapid Publ. 2026, 22, 27.
  5. Magnetic characterization of grain boundaries in electrical steel using the magneto-optical Faraday effect incremental permeability and principal component analysis,
    Shurui ZHANG, Yves Armand TENE DEFFO, Andre SALGADO, Takayuki ISHIBASHI, Benjamin DUCHARNE and Tetsuya UCHIMOTO,
    Int. J. Applied Electromag. Mech., 2026. (accepted)
  6. Reconfigurable Magneto-Optical Diffractive Neural Network with Enhanced Optical Phase Modulation,
    H. Sakaguchi, K. Watanabe, J. Ikeda, S. Sumi, H. Awano, F. Z. Chafi, T. Ishibashi,
    Scientific Reports, 16, 8920, 2026.
  7. Circularly Polarized Light-Induced Magnetization Reversal in Bi,Ga-Substituted Magnetic Garnet Films,
     R. Asatani, S. Suzuki, A. Hata, M. A. A. Masud, H. Sakaguchi, S. Isogami and T. Ishibashi, J. Magn. Soc. Jpn., 50(2), pp.30-34, 2026.
  8. TeO2–BaO–Bi2O3 tellurite optical glasses II. - Linear and non-linear optical and magneto-optical properties,
    J. Hrabovsky, J.R. Love, L. Strizik, T. Ishibashi, S. Zollner, M. Veis,
    Optical Materials, 169, 117572, 2026.
  9. Simultaneous measurement of longitudinal and transverse Kerr images using a polarization camera,
    Takayuki Ishibashi, Shigehiro Asai, Itsuo Wakamatsu, Hotaka Sakaguchi and Tomoyasu Taniyama,
    J. Phys.: Conf. Series, 3161, 012040, 2026.     DOI 10.1088/1742-6596/3161/1/012040
  10. Development of online learning technique for magneto-optical diffractive deep neural networks,
    Hotaka Sakaguchi, Riku Oya, Satoshi Sumi, Hiroyuki Awano, Hirofumi Nonaka, Fatima Zahra Chafi, Takayuki Ishibashi,
    J. Phys.: Conf. Series, 3161, 012042, 2026.DOI 10.1088/1742-6596/3161/1/012042
  11. Improving magneto-optical properties of Nd0.5Bi2.5Fe5O12 thin films by introducing Bi3Fe5O12 underlayer,
    J. Zhang, K. Watanabe, F. Z. Chafi, M. Nishikawa, H. Asada, M. Kawahara, M. Veis, and T. Ishibashi,
    J. Magn. Soc. Jpn., 50(1), pp.23-29, 2026. https://doi.org/10.3379/msjmag.2601R004
  12. Angular momentum compensation in Eu0.5Bi2.5Fe5-xGaxO12 thin films prepared by metal-organic decomposition method,
     M. A. A. Masud, W. Asano, K. Watanabe, M. Kawahara, F. Z. Chafi, M. Nishikawa, and T. Ishibashi,
    IEEE Transactions on Magnetics, Vol.61, No.7, pp.1-11, July 2025. DOI: 10.1109/TMAG.2025.3575340
  13. 磁気光学回折型ディープニューラルネットワークデバイス、光ニューラルネットワーク最前線、
    石橋隆幸、Optronics、No.520、pp.171-175、2025年4月
  14. 磁気光学回折型ニューラルネットワークデバイス、
    石橋隆幸、日本磁気学会誌「まぐね」Vol.19, No.6, pp.299-304, 2024

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