1. [1] Tomita, M. and Murakami, M., "High-temperature superconductor bulk magnets that can trap magnetic fields of over 17 tesla at 29K," Nature, Vol. 421, pp. 517-520, 2003.
2. [2] International Energy Agency, "IEA Technology Collaboration Programme on High Temperature Superconductivity 2020 Annual Report," https://ieahts.org/downloads/2020-HTS-TCP-Annual-Report-Final.pdf
3. [3] Sakamoto, Y., Ukita, K. and Sasakawa, T., "State Monitoring Method for a Linear-Motor-Type Rail Brake using an Excitation Inverter," RTRI Report, Vol. 34, No. 11, pp. 25-30, 2020 (in Japanese).
4. [4] Yoda, H., Sakamoto, Y., Kashiwagi, T. and Sasakawa, T., "Design Study Aiming at Increasing Transfer Power per Unit Area of the Coil for the Wireless Power Transfer System of Railway Vehicles," RTRI Report, Vol. 33, No. 5, pp. 17-22, 2019 (in Japanese).
5. [5] Durrell, J.H. et al., "A trapped field of 17.6T in melt-processed, bulk Gd-Ba-Cu-O reinforced with shrink-fit steel," Supercond. Sci. Technol. 27, 2014082001, 2017.