Journal Paper

• Keisuke Shimizu, Ryo Kawabe, Hajime Hojo, Haruki Shimizu, Hajime Yamamoto, Marin Katsumata, Kei Shigematsu, Ko Mibu, Yu Kumagai, Fumiyasu Oba, Masaki Azuma. Direct Observation of Magnetization Reversal by Electric Field at Room Temperature in Co-Substituted Bismuth Ferrite Thin Film, NANO LETT., Vol. 19, No. 3, pp. 1767–1773, Jan. 2019.
• Hajime Hojo, Kengo Oka, Keisuke Shimizu, Hajime Yamamoto, Ryo Kawabe, Masak Azuma. Development of Bismuth Ferrite as a Piezoelectric and Multiferroic Material by Cobalt Substitution, ADVANCED MATERIALS, Vol. 30, No. 33, p. 1705665, Aug. 2018.
• H.Hojo, R.Kawabe, K.Shimizu, H. Yamamoto, K.Mibu, K.Samanta, T.Saha-Dasgupta, M.Azuma. Ferromagnetism at Room Temperature Induced by Spin Structure Change in BiFe₁-_xCo_xO₃ Thin Films, Advanced materials, Vol. 29, No. 9, p. 1603131, Mar. 2017.
• Hajime Hojo, Ryo Kawabe, Keisuke Shimizu, Hajime Yamamoto, Ko Mibu, Kartik Samanta, Tanusri Saha‐Dasgupta, Masaki Azuma. Ferromagnetism at Room Temperature Induced by Spin Structure Change in BiFe₁− _xCo_xO₃ Thin Films, Advanced Materials, Vol. 29, No. 9, pp. 1603131-1～1603131-7, Dec. 2016.

International Conference (Reviewed)

• M. Azuma, H. Hojo, R. Kawabe, K. Shimizu, H. Yamamoto, K. Mibu, K. Samanta, T. Saha-Dasgupta. Room temperature ferromagnetism in Co substituted BiFeO₃ induced by spin structure change, Indo-US Bilateral Workshop on Physics and Chemistry of Oxides: Theory meets Experiment, Jan. 2017.

International Conference (Not reviewed / Unknown)

• Keisuke Shimizu, Ryo Kawabe, Hajime Yamamoto, Hajime Hojo, Kei Shigematsu, Masaki Azuma. Direct observation of magnetization reversal by polarization switching in multiferroic Co-substituted BiFeO3 thin film, The 9th APCTP Workshop on Multiferroics, Nov. 2017.

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