[18p-PB1-1~84] 10 Spintronics and Magnetics (Poster)

[18p-PB1-50] The crystal structure and magneto-transport properties of Ni_xCo_3-xO₄ films

〇Asaka Tsujie¹, Andrea Fernandez², Lora Veneracion², Takashi Yanase³, Toshihiro Shimada³, Taro Nagahama³ (1.Hokkaido Univ., 2.Philippines Diliman Univ., 3.Hokkaido Univ*)

Keywords:inverse spinel structure, MBE, ferrimagnetic material

NiCo₂O₄ is ferrimagnetic material, which has a inverse spinel type structure and has high Curie temperature, so it is expected to be spintronic material operated at room temperature. In addition, previous studies have reported that NiCo₂O₄ thin films prepared by PLD showed perpendicular magnetic anisotropy and good electrical conductivity depending on the degree of cation site disorder . Therefore, NiCo₂O₄ has possibility to be applied to spin filter or MTJs. In this work, MgO(001) substrate / MgO(20 nm) / Ni_xCo_3-xO₄ (24 nm) / AlO (2 nm)Ni_xCo_3-xO₄ thin film was fabricated by MBE method and its crystal structure and magneto-transport properties were investigated for the purpose of applying Ni_xCo_3-xO₄ to spintronic devices with perpendicular magnetization.