Research outcomes (Papers)

2024

  1. High tolerance of the superconducting current to large grain boundary angles in potassium-doped BaFe2As2,
    T. Hatano, D. Qin, K. Iida, H. Gao, Z. Guo, H. Saito, S. Hata, Y. Shimada, M. Naito, A. Yamamoto
    NPG Asia Mater. 16 41 (2024).
  2. Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te),
    K. Iida, Y. Yamauchi, T. Hatano, K. Walter, B. Holzapfel, J. Hänisch, Z. Guo, H. Gao, H. Shi, S. Tokuta，S. Hata, A. Yamamoto, H. Ikuta
    Sci. Technol. Adv. Mater. 25 2384829 (2024).
  3. Quadrupling the depairing current density in the iron-based superconductor SmFeAsO1–xHx,
    M. Miura, S. Eley, K. Iida, K. Hanzawa, J. Matsumoto, H. Hiramatsu, Y. Ogimoto, T. Suzuki, T. Kobayashi, T. Ozaki, H. Kurokawa, N. Sekiya, R. Yoshida , T. Kato, T. Okada , H. Okazaki, T. Yamaki, J. Hänisch, S. Awaji, A. Maeda, B. Maiorov, H Hosono
    Nature Materials 23 1370-1378 (2024).

2023

  1. Focus on recent advances in superconducting films,
    P. Cayado, J. Hänisch, K. Iida, C. Senatore
    Supercond. Sci. Technol. 36 090401 (2023).
  2. Recent progress on epitaxial growth of Fe-based superconducting thin films,
    K. Iida, J. Hänisch, S. Hata, A. Yamamoto
    Supercond. Sci. Technol. 36 063001 (2023).

2022

  1. Thin film growth of Ba(Zn,Fe)2As2 by molecular beam epitaxy,
    R. Ikegamia, T. Hatanoa, T. Kiyozawaa, T. Ishidab, Y. Tomizawaa, K. Iida, H. Ikuta,
    Thin Solid Films 758 139420 (2022).
  2. K-doped Ba122 epitaxial thin film on MgO substrate by buffer engineering,
    D. Qin, K. Iida, Z. Guo, C. Wang, H. Saito, S. Hata, M. Naito, A. Yamamoto,
    Supercond. Sci. Technol. 35 09LT01 (2022).
  3. Microstructure, pinning properties, and aging of CSD-grown SmBa2Cu3O7-δ films with and without BaHfO3 nanoparticles,
    J. Hänisch, K. Iida, P. Cayado, M. Erbe, L. Grünewald, T. Hatano, T. Okada, D. Gerthsen, S. Awaji, B. Holzapfel,
    Supercond. Sci. Technol. 35 084009 (2022).
  4. Inter- to intra-layer resistivity anisotropy of NdFeAs(O,H) with various hydrogen concentrations,
    M. Y. Chen, K. Iida, K. Kondo, J. Hänisch, T. Hatano, H. Ikuta,
    Phys. Rev. Materials 6 054802 (2022).

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Research outcomes (Books)

  1. E1 Introduction to Processing Methods, E2 Introduction to Section E2: Bulk Materials, E5 Introduction to Section E5: Superconductor Contacts
    Kazumasa Iida,
    HANDBOOK OF SUPERCONDUCTING MATERIALS Second Edition, (2021),
    Eds. David A. Cardwell, David C. Larbalestier, Aleksander Braginski, Taylor & Francis Books, Inc.
  2. 鉄系超伝導体の薄膜成長,
    内藤 方夫, 飯田 和昌
    超伝導技術の最前線[応用編], 第2章, 株式会社 近代科学社
  3. Grain Boundaries in Fe-Based Superconductors,
    Jens Hänisch, Kazumasa Iida,
    Superconductivity From Materials Science to Practical Applications, 269-302 (2020),
    Eds. P. Mele, K. Prassides, C. Taranini, A. Palau, P. Badica, A. K. Jha, T. Endo, Springer Nature Switzerland.
  4. Nanocomposite RE-Ba-Cu-O Bulk Superconductors,
    Kazumasa Iida,
    Oxide Thin Films, Multilayers, and Nanocomposites, 85-95 (2015),
    Eds. P. Mele, T. Endo, S. Arisawa, C. Li, T. Tsuchiya, Springer Nature Switzerland.

Research outcomes (Presentations)

2024

  1. Fluorination of (Nd, Sr)2NiO4 thin films by a three-step process and their characterization,
    (Contributed oral) S. Kosaki, T. Kawahara, T. Urata, K. Iida, T. Hatano, H. Ikuta,
    The Physical Society of Japan 2024 Annual (79th) Meeting (Hokkaido University, Hokkaido, JPN), September 18, 2024
  2. Anisotropy of electrical resistance in copper oxide superconducting GdBa2Cu3O7-δ thin films,
    (Poster presentation) K. Morinaga, T. Hatano, H. Ikuta, K. Iida
    The 85th JSAP Autumn Meeting 2023 (TOKI MESSE and adjoining facilities & Online, Niigata, JPN), September 17, 2024
  3. Status of Iron Based Superconductors: Characteristics and Relevant Properties to Applications,
    (Plenary) Kazumasa Iida,
    The Applied Superconductivity Conference (ASC 2024) (Salt Palace Convention Center, Salt Lake City, USA), September 3, 2024

2023

  1. Fabrication of symmetric [010]-tilt grain boundaries of Fe(Se,Te),
    (Contributed oral) K. Iida, Y. Yamauchi, T. Hatano, J. Hänisch, Z. Guo, H. Gao, S. Tokuta, H. Shi, S. Hata, A. Yamamoto, H. Ikuta,
    Materials Research Meeting, MRM2023 (Kyoto International Conference Center, Kyoto, JPN), December 15, 2023
  2. Superconducting properties of the mechanically exfoliated strain-free Fe(Se,Te) film,
    (Poster presentation) Len Masuda, Kai Walter, Alexandra Jung, Alberto Martinelli, Jens Hänisch, Kazumasa Iida,
    Materials Research Meeting, MRM2023 (Kyoto International Conference Center, Kyoto, JPN), December 15, 2023
  3. Orientation dependence of structural and critical current properties in symmetric [010]-tilt grain boundaries of Fe(Se,Te),
    (Contributed oral) K. Iida, Y. Yamauchi, T. Hatano, J. Hänisch, Z. Guo, H. Gao, S. Tokuta, H. Shi, S. Hata, A. Yamamoto, H. Ikuta,
    The 36th International Symposium on Superconductivity, ISS2023 (Takina Wellington Convention and Exhibition Centre, Wellington, NZ), November 30, 2023
  4. Doping dependence of anisotropy and critical current density in NdFeAs(O,H) thin films,
    (Contributed oral) T. Hatano, H. Hibino, H. Imanaka, M. Chen, K. Iida, H. Ikuta,
    The 36th International Symposium on Superconductivity, ISS2023 (Takina Wellington Convention and Exhibition Centre, Wellington, NZ), November 30, 2023
  5. Superconducting properties of the mechanically exfoliated strain-free Fe(Se,Te) film,
    (Contributed oral) Len Masuda，Kai Walther，Alexandra Jung，Alberto Martinelli，Jens Hänisch，Kazumasa Iida,
    The 84th JSAP Autumn Meeting 2023 (Kumamoto-jo Hall and other surrounding facilities, Kumamoto, JPN), September 20, 2023
  6. Fabrication of symmetric [010]-tilt grain boundaries of Fe(Se,Te),
    (Contributed oral) Kazumasa Iida, Yoshihiro Yamauchi, Takafumi Hatano, Jens Hänisch, Zimeng Guo, Hongye Gao, Shinnosuke Tokuta, Haoshan Shi, Satoshi Hata, Akiyasu Yamamoto, Hiroshi Ikuta,
    The 84th JSAP Autumn Meeting 2023 (Kumamoto-jo Hall and other surrounding facilities, Kumamoto, JPN), September 20, 2023
  7. H content dependence of critical current density in NdFeAs(O,H) and the fabrication of its artificial grain boundaries,
    (Contributed oral) Takafumi Hatano, Hiroya Imanaka, Hiroto Hibino, Kazumasa Iida, Hiroshi Ikuta,
    The 84th JSAP Autumn Meeting 2023 (Kumamoto-jo Hall and other surrounding facilities, Kumamoto, JPN), September 20, 2023
  8. The anisotropy of iron-based superconductor NdFeAs(O,H),
    (Contributed oral) T. Hatano, H. Hibino, M. Chen, K. Sakurai, K. Iida, H. Ikuta
    The Physical Society of Japan　2023 Annual Meeting (Tohoku University), September 18, 2023
  9. Fe-based superconducting thin films and their potential for high field applications,
    (Focus talk) Kazumasa Iida,
    16th European Conference on Applied Superconductivity, EUCAS2023 (Bologna, Italy), September 5, 2023
  10. Heavily electron doping NdFeAsO with High Jc and low anisotropy,
    (Invited) Kazumasa Iida,
    8th International Conference on Superconductivity and Magnetism, ICSM2023 (Liberty Lykia Hotel, Fethiye, Turkey), May 9, 2023

2022年

  1. New Strategy for High Critical Current Density: Heavily Electron Doping NdFeAsO,
    (Invited) Kazumasa Iida,
    International Forum on AppliedSuperconductivity and Magnetism (onsite & virtual), December 6, 2022
  2. Approaching the ultimate superconducting properties of K-doped BaFe2As2 epitaxial thin films achieved by naturally formed low-angle grain boundary networks,
    (Contributed oral) K. Iida, D. Qin, C. Tarantini, T. Hatano, C. Wang, Z. Guo, H. Gao, H. Saito, S. Hata, M. Naito, A. Yamamoto,
    Applied Superconductivity Conference (ASC) 2022 (Hawaii Convention Center, Honolulu, USA), October 24, 2022
  3. Nanoscale orientation analysis toward the grain boundary design of NdFeAs(O,F) films on textured MgO substrates,
    (Contributed oral) Z. Guo, H. Gao, K. Kondo, T. Hatano, K. Iida, J. Hänisch, H. Ikuta, S. Hata,
    Applied Superconductivity Conference (ASC) 2022 (Hawaii Convention Center, Honolulu, USA), October 24, 2022
  4. Superconducting Properties of Ba1–xKxFe2As2 Thin Films on MgO Substrate and the Role of Parent BaFe2As2 Buffer Layer,
    (Contributed oral) D. Qin, T. Hatano, K. Iida, Z. Guo, H. Gao, S. Hata, M. Naito, A. Yamamoto,
    Applied Superconductivity Conference (ASC) 2022 (Hawaii Convention Center, Honolulu, USA), October 24, 2022
  5. Film growth and evaluation of Fe(Se,Te) and fabrication of [010]-tilt bicrystal thin films,
    (Contributed oral) Y. Yamauchi, K. Iida, T. Hatano, Z. Guo, H. Gao, S. Tokuta, S. Hata, A. Yamamoto, H. Ikuta,
    The 83rd JSAP Autumn Meeting, Kawauchi-Kita Campus, Tohoku University, September 22, 2022
  6. Recent progress of Fe-based superconducting thin films,
    (Invited) Kazumasa Iida,
    International Materials Research Congress-IMRC 2022 (onsite & virtual), August 16, 2022
  7. K-doped BaFe2As2/BaFe2As2 bilayer for bi-crystal experiments,
    (Contributed oral) K. Iida, D. Qin, T. Hatano, H. Gao, Z. Guo, C. Wang, H. Saito, S. Hata, M. Naito, A. Yamamoto,
    MRS Spring Meeting & Exhibit (onsite & virtual), May 24, 2022

Before 2021, please click here