Improvement of critical current densities in SmBa2Cu3Oy, films with BaHfO3 nano-rods using low temperature growth technique

11th European Conference on Applied Superconductivity

Miura, Shun^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, Chikikusa-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: C-axis orientations;    Growth directions;    Growth substrates;    Low substrate temperature;    Low temperature growth;    Optimal morphology;    Substrate temperature;    Superconducting properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/2/022021/pdf
DOI  :  10.1088/1742-6596/507/2/022021

来源: IOP

【 摘 要 】

We studied growth substrate temperature dependent morphologies of BaHfO3(BHO) nano-rods for SmBa2Cu3Oy, (SmBCO) films with BHO fabricated by pulsed laser deposition (PLD) method. The morphology of BHO nano-rods within the SmBCO matrix could be controlled by changing substrate temperatures adoping a Low Temperature Growth (LTG) technique. Using the LTG technique, we could fabricate SmBCO films showed c-axis orientation even at low substrate temperature during deposition without a degradation of superconducting properties, which is one of the most advantages of the LTG technique. In this study, we found an optimal morphology of the BHO nano-rods and the morphology was fine, straight and various growth directions. The BHO nano-rods were more effective to improve the Jcin a magnetic field than other morphologies of the BHO nano-rods.