TY - JOUR
T1 - Microstructure and flux pinning of OCMG processed (Sm0.33Eu 0.33Gd0.33)Ba2Cu3Oy with sub-micron Gd2BaCuO5 second phase particles
AU - Muralidhar, M.
AU - Jirsa, M.
AU - Sakai, N.
AU - Murakami, M.
N1 - Funding Information:
This work was supported by New Energy and Industrial Technology Development Organization (NEDO) as a part of its Research and Development of Fundamental Technologies for Superconductor Applications. M.J. acknowledges support from grant no. A1010919/99 of GA ASCR.
PY - 2003/10
Y1 - 2003/10
N2 - We present study of microstructure and magnetic properties of bulk melt-textured (Sm0.33Eu0.33Gd0.33)Ba 2Cu3Oy "SEG-123" superconductors with 30 mol% of fine Gd-211 particles. To improve flux pinning performance at 77 K, Gd-211 particles of various sizes were added to the SEG-123 matrix before melt-texture growth. Scanning electron microscopy showed that the homogeneity of 211 particle dispersion improved with increasing sub-micron size of initially added 211 powder. At the same time, the self-field critical current density, Jc improved and reached 107 kA/cm2 at 77 K (Ha∥c-axis). The size of Gd-211 particles did not affect pinning force density in high fields.
AB - We present study of microstructure and magnetic properties of bulk melt-textured (Sm0.33Eu0.33Gd0.33)Ba 2Cu3Oy "SEG-123" superconductors with 30 mol% of fine Gd-211 particles. To improve flux pinning performance at 77 K, Gd-211 particles of various sizes were added to the SEG-123 matrix before melt-texture growth. Scanning electron microscopy showed that the homogeneity of 211 particle dispersion improved with increasing sub-micron size of initially added 211 powder. At the same time, the self-field critical current density, Jc improved and reached 107 kA/cm2 at 77 K (Ha∥c-axis). The size of Gd-211 particles did not affect pinning force density in high fields.
KW - Flux-pinning for material index
KW - LRE-BaCuO
KW - Melt-textured
KW - SEG-123
KW - Ultra-fine Gd-211
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U2 - 10.1016/S0921-4534(03)00997-3
DO - 10.1016/S0921-4534(03)00997-3
M3 - Conference article
AN - SCOPUS:0042190209
VL - 392-396
SP - 619
EP - 622
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 1
T2 - Proceedings of the 15th International Symposium on Superconduc
Y2 - 11 November 2002 through 13 November 2002
ER -