Study of Temperature Properties of the High Temperature Superconductor Spiral Coil
Fang Jing¹,Ma Qiyuan²,WangWenbing¹
(1. Xi'an Jiaotong University, Xi'an 710049, China£»2. HongKong University)

Abstract: The temperature properties of spiralcoil made of high temperature superconducting material YBaCuO thin film on LaAlO₃ substrate in magnetic resonance image system is analyzed by mixed potential integral combined with method of moment. The conductivity and surface impediment of YBaCuO material are provided by enhanced two-fluid model, in which, superelectrons scattering and loss are considered. This is different from the conventional twoª²fluid model. The simulated data are compared with the experimental results. It shows that accuracy in resonant frequency of high temperature supercon ducting spiral RF receive coil has 4% improvement and the accuracy in unload Q-factor has shown with one order improvement compared with the conventional two-fluid model.
Keywords: temperature properties;high temperature superconducting;spiral coil