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Transport critical current densities and magnetization in superconducting silver sheathed-Ag, Sn/YBCO composite wires

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1 Author(s)
Chikaba, J. ; Fac. of Eng., Kinki Univ., Iizuka, Japan

Magnetic-field dependences of transport critical current density Jc(B) and DC magnetization M were measured for silver sheathed YBCO superconducting wires to which various amounts of silver (Ag) and tin oxide (SnO2) were added. Sample wires were fabricated by rolling and sintering at 910°C for 20 h. The short sample wire has a length of 4 cm and core diameter of 1 mm. Zero field transport critical current densities Jc (0) with small amounts of SnO2 were more improved than with Ag addition. Concerning the field dependence of Jc (B), small amounts of SnO2 addition were effective in increasing the Jc(B) in the low field region (B<10-2 T) and intermediate field region (10-2 T<B<10-1 T). In the case of the ternary system (Ag+Sn/YBCO), the value of Jc(B) seems to be mainly dominated by SnO 2 content

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Magnetics, IEEE Transactions on  (Volume:28 ,  Issue: 1 )