TY - JOUR
T1 - Influence of precursor composition on the microstructure and superconducting properties of Dy-Ba-Cu-O filaments
AU - Ikebe, Y.
AU - Ban, E.
AU - Matsuoka, Y.
AU - Nishijima, G.
AU - Watanabe, K.
PY - 2006/6/1
Y1 - 2006/6/1
N2 - Dy-Ba-Cu-O filaments have been successfully fabricated by a solution spinning method. The relationship between the partial melting temperature and the transport Jc value at 77 K of the filamentary sample was systematically investigated. Two kinds of precursor filaments with starting composition of Dy:Ba:Cu 1.18:2.12:3.09 (sample A)and Dy:Ba:Cu 1.00:2.00:3.00 (sample B) were partially melted in 1%O2 + Ar atmospheric gas and oxygenated in pure 100% O2 gas. Samples partially melted at a wide temperature range of 990-1040 °C had Jc values higher than 104 A/cm2. Both sample A and sample B partially melted at 1020 °C exhibited the maximum Jc value higher than 4.2 × 104 A/cm2 and 2.0 × 104 A/cm2, respectively. These samples had a dense microstructure consisting predominantly of Dy123 and finely dispersed Dy211 particles. The Dy211 particles with a diameter of about 1νm were finely dispersed in sample A, while the particles with a diameter of about 5νm were observed in sample B. The Jc values of both samples were maintained about 2.0 × 103 A/cm2 up to 14 T.
AB - Dy-Ba-Cu-O filaments have been successfully fabricated by a solution spinning method. The relationship between the partial melting temperature and the transport Jc value at 77 K of the filamentary sample was systematically investigated. Two kinds of precursor filaments with starting composition of Dy:Ba:Cu 1.18:2.12:3.09 (sample A)and Dy:Ba:Cu 1.00:2.00:3.00 (sample B) were partially melted in 1%O2 + Ar atmospheric gas and oxygenated in pure 100% O2 gas. Samples partially melted at a wide temperature range of 990-1040 °C had Jc values higher than 104 A/cm2. Both sample A and sample B partially melted at 1020 °C exhibited the maximum Jc value higher than 4.2 × 104 A/cm2 and 2.0 × 104 A/cm2, respectively. These samples had a dense microstructure consisting predominantly of Dy123 and finely dispersed Dy211 particles. The Dy211 particles with a diameter of about 1νm were finely dispersed in sample A, while the particles with a diameter of about 5νm were observed in sample B. The Jc values of both samples were maintained about 2.0 × 103 A/cm2 up to 14 T.
UR - http://www.scopus.com/inward/record.url?scp=33746288323&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33746288323&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/43/1/048
DO - 10.1088/1742-6596/43/1/048
M3 - Article
AN - SCOPUS:33746288323
VL - 43
SP - 191
EP - 194
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 048
ER -