References Ë 51[21]Kambara M, Babu NH, Sadki ES, Cooper JR, Minami H, Cardwell DA, Campbell AM, Inoue IH.
Rapid communication: High intergranular critical currents in metallic MgB 2 superconductor.
Supercond Sci Technol. 2001;14:L5.
[22]Yamamoto A, Yumoto H, Shimoyama J, Kishio K, Ishihara A, Tomita M. MgB 2 bulk
superconducting magnet. Physics. 2012;8:1845.
[23]Viznichenko RV, Kordyuk AA, Fuchs G, Nenkov K, Mnuller KH, Prikhna TA, Gawalek W.
Temperature dependence of trapped magnetic field in MgB 2 bulk superconductor. Appl Phys
Lett. 2003;83:4360–4362.
[24]Fujishiro H, Naito T, Oyama M, Arayashiki T, Tamura T, Sasaki T, Giunchi G. Numerical
Simulation of trapped field and temperature rise in MgB bulks magnetized by pulsed field.
IEEE Trans on Appl Supercond. 2013;23:6800804.
[25]Muralidhar M, Ishihara A, Suzuki K, Fukumoto Y, Yamamoto Y, Tomita M. Optimization of the
fabrication process for high trapped field MgB 2 bulks. Physica C. 2013;494:85–88.
[26]Naito T, Sasaki T, Fujishiro H. Trapped magnetic field and vortex pinning properties of
MgB 2 superconducting bulk fabricated by a capsule method. Supercond Sci Technol.
2012;25:095012.
[27]Marignetti F, Cavaliere V, Giunchi G, Messina G, Celentano G, Matrone A. Use of MgB
Superconductors for excitation field in synchronous machines—Part I: bulk magnets. IEEE
Trans on Appl Supercond. 2013;23:8002506.
[28]Bednorz JG, Müler KA. Possible high-Tcsuperconductivity in Ba–La–Cu–O system. Physik Z.
1986;B64(1):189–193.
[29]Wu MK, Ashburn JR, Torng CJ, Hor PH, Meng RL, Gao L, Huang ZJ, Wang YQ, Chu CW. High-
pressure study of the new Yb–Ba–Cu–O superconducting compound system. Phys Rev Lett.
1987;58:908–912.
[30]Zhao ZX, Chen LQ, Cui CG, Huang YZ, Liu JX, Chen GH, Li SL, Guo SQ, He YY. HighTc
superconductivity of Sr (Ba)–La–Cu. Chinese science bulletin. 1987;32:177–179. (In Chinese).
[31]Michel C, Hervieu M, Borel MM, Grandin A, Deslandes F, Provost J, Raveau B. Superconductivi-
ty in the Bi–Sr–Cu–O system. Z. Phys B. 1987;68:421–423.
[32]Tarascon JM, LePage Y, Barboux P, Bagley BG, Greene LH, McKinnon WR, Hull GW, Giroud
M, Hwang DM. Crystal substructure and physical properties of the superconducting phase
Bi 4 (Sr, Cr) 6 Cu 4 O 16 +x. Phys Rev B. 1988;37:9382.
[33]Maeda H, Tanaka Y, Fukutumi M, Asano T. The strength of rubbing worked on polyimide films
for aligning nematic and chiral smectic liquid crystals: Controlling pretilt angles and some
electrooptic performances of LCDs. Jpn J Appl Phys. 1988;27:827–829.
[34]Zandbergen HW, Huang YK, Menken MJV, Li JN, Kadowaki K, Menovsky AA, vanTendeloo G,
Amelinckx S. Electron microscopy on theTc=110 K (midpoint) phase in the system
Bi 2 O 3 –SrO–CaO–CuO. Nature. 1988;332:620–623.
[35]Huang Y, Miao H, Hong S, Parrell JA. Recent advances in Bi-2212 round wire performance for
high field applications. IEEE Trans on Appl Supercond. 2014;24:6400205.
[36]Golovashkin AI, Shabanova NP. Direct determination of electronic density of states
N*(EF) for Nb 3 Sn from upper critical field HC2and resistivity휎. Physica C: Supercond.
1991;185–189:2709–2710.
[37]Weijers HW, Trociewitz UP, Marken KR, Meinesz M, Miao H, Schwartz J. The generation of
25.05 T using a 5.11 T Bi 2 Sr 2 CaCu 2 Ox superconducting insert magnet. Supercond Sci Technol.
2004;17:636–636.
[38]Kalsi S. Applications of high temperature superconductors to electric power equipment.
New York: John Wiley and Sons; 2011.
[39]Yi HP, Zhang JS, Liu Q, Han ZH. The chinese journal of nonferrous metals. 2004;14S1:341–346.
(In Chinese).