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Electromagnetic Properties of (\hbox {Gd}, \hbox {Y}) \hbox {Ba}_{2}\hbox {Cu}_{3}\hbox {O}_{\rm x} Superconducting Tapes With High Levels of Zr Addition

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8 Author(s)
Liu, Y. ; Dept. of Mech. Eng., Univ. of Houston, Houston, TX, USA ; Yao, Y. ; Chen, Y. ; Khatri, N.D.
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The dependence of the critical current density (Jc) on the orientation of applied magnetic fields was studied in Zr-doped ( Gd, Y)Ba2Cu3Ox tapes fabricated by metal organic chemical vapor deposition. The in-field performance of Jc of (Gd, Y)Ba2Cu3Ox tapes with Zr-doping levels of 7.5-30 at.% was investigated up to 5 T over a temperature range of 40-77 K. The highest critical currents (Ic) at H ||c and the highest values of minimum Ic in angular dependence measurements were achieved in the tapes with 20% Zr doping over a broad range of temperature and magnetic field conditions measured. The electromagnetic properties have been related to the changes in BaZrO3 content and microstructure.

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Applied Superconductivity, IEEE Transactions on  (Volume:23 ,  Issue: 3 )