Influence of Iron Core on Critical Current and Inductance of an HTS Double Pancake CoilMeiying Yin, Yong Zhao, Zhuyong Li, Yanling Hu, Ping Rui, Jing Zhang, Ke Zhang and Fei XuMATEC Web Conf., 228 (2018) 03002DOI: https://doi.org/10.1051/matecconf/201822803002