TY - JOUR
T1 - Influence of Zr- and Sn-doping on Sm-Ba-Cu-O filaments fabricated by a chemical solution spinning
AU - Ban, Eriko
AU - Ikebe, Yumiko
AU - Nishijima, Gen
AU - Awaji, Satoshi
AU - Watanabe, Kazuo
N1 - Funding Information:
This work was performed at the High Field Laboratory for superconducting Materials, Institute for Materials Research, To-hoku University. (Project No 11H0031).
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - The effect of Zr and Sn addition on the critical current density (J c) and the microstructure of filamentary SmBa 2Cu 3O y (Sm123) has been investigated. Samples with additions fabricated by a solution spinning method were partially melted under an atmosphere gas containing 0.1-3.0% O 2. After heat-treatment, homogeneous dispersion of fine Sm 2BaCuO 5 (Sm211) particles was observed in the Zr-doped sample. The 0.2 at% Zr-doped Sm123 showed the depressed J c value of 1.8 × 10 4A/cm 2 at 77 K and self-field compared with the undoped sample. From the J c measurement in magnetic fields, J c value higher than 10 3A/cm 2 at 77 K was maintained up to 8 T. On the other hand, 0.2 at% Sn-added sample showed high J c value of 5.0× 10 4 A/cm 2 at 77 K and self-field, and the J c value higher than 10 3A/cm 2 is maintained up to 17 T. A small amount of Sn doping was found to be effective in increasing the J c under high magnetic field and the irreversibility field of Sm123 filaments.
AB - The effect of Zr and Sn addition on the critical current density (J c) and the microstructure of filamentary SmBa 2Cu 3O y (Sm123) has been investigated. Samples with additions fabricated by a solution spinning method were partially melted under an atmosphere gas containing 0.1-3.0% O 2. After heat-treatment, homogeneous dispersion of fine Sm 2BaCuO 5 (Sm211) particles was observed in the Zr-doped sample. The 0.2 at% Zr-doped Sm123 showed the depressed J c value of 1.8 × 10 4A/cm 2 at 77 K and self-field compared with the undoped sample. From the J c measurement in magnetic fields, J c value higher than 10 3A/cm 2 at 77 K was maintained up to 8 T. On the other hand, 0.2 at% Sn-added sample showed high J c value of 5.0× 10 4 A/cm 2 at 77 K and self-field, and the J c value higher than 10 3A/cm 2 is maintained up to 17 T. A small amount of Sn doping was found to be effective in increasing the J c under high magnetic field and the irreversibility field of Sm123 filaments.
KW - Chemical metal doping
KW - Sm-Ba-Cu-O filaments
KW - critical current density
KW - magnetic field behavior
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U2 - 10.1109/TASC.2011.2179841
DO - 10.1109/TASC.2011.2179841
M3 - Article
AN - SCOPUS:84862557438
VL - 22
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 3
M1 - 6104371
ER -