BaMO3 (M=Zr, Hf, Sn) material dependence of Tc reduction in BaMO3-doped SmBa2Cu3Oy, films

11th European Conference on Applied Superconductivity

Tsuruta, Akihiro^1 ; Yoshida, Yutaka^1 ; Ichino, Yusuke^1 ; Ichinose, Ataru^2 ; Matsumoto, Kaname^3 ; Awaji, Satoshi^4

Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya

464-8603, Japan^1

Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka, Kanagawa

240-0196, Japan^2

Department of Materials Science and Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu

804-8550, Japan^3

Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai

980-8577, Japan^4

关键词: Lattice misfits;    Lattice strain;    REBa2Cu3Oy;    SmBa2Cu3Oy;    Superconducting properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/2/022043/pdf
DOI  :  10.1088/1742-6596/507/2/022043

来源: IOP

【 摘 要 】

For the improvement of superconducting properties of BaMO3(M=Zr, Sn, HQ-doped REBa2Cu3Oyfilms, we focused on the Tcreduction caused by lattice misfit between BaMO3and REBa2Cu3Oy. We compared the influence on the Tc reduction of BaZrO3, BaSnO3and BaHfO3-doped SmBa2Cu3Or (SmBCO) films with various BMO contents. From the correlation between configuration of nanorods and c-axis expansion, it was suggested that the lattice strain working on the SmBCO matrix became stronger in the order of BaHfO3, BaZrO3and BaSnO3. Therefore, the combination of SmBCO and BaHfO3is better regarding the suppression of the Tc reduction compared with other combinations of SmBCO and BaMO3.