TY - JOUR
T1 - Critical current density and microstructures of thick monocore Bi2212 tapes grown in high magnetic fields
AU - Maeda, H.
AU - Sastry, P. V.P.S.S.
AU - Trociewitz, U. P.
AU - Schwartz, J.
AU - Ohya, K.
AU - Sato, M.
N1 - Funding Information:
Manuscript received August 5, 2002. This work was supported by the National Science Foundation through the National High Magnetic Field Laboratory and the Office of Navel Research through the Center for Advanced Power Systems.
PY - 2003/6
Y1 - 2003/6
N2 - Ag-sheathed Bi2212 monocore tapes with core thickness between 80 and 700 μm were heat-treated in flowing O2 in magnetic fields up to 15 T. A uniform high-degree of texture is achieved throughout the thickness of the tapes when heat-treated in a magnetic field (Ha) whereas a large portion of nontextured region exists without magnetic field. The critical current density Jc of the tapes increases with increasing Ha due to enhancement in texture. The self field critical Ic > 1000 A was achieved for tapes with a core thickness of 180 μm. However, for tapes with larger core thicknesses, Ic decreases due to inhomogeneous melting. The magnetic field is more effective in enhancing texture in the early stages of crystal growth.
AB - Ag-sheathed Bi2212 monocore tapes with core thickness between 80 and 700 μm were heat-treated in flowing O2 in magnetic fields up to 15 T. A uniform high-degree of texture is achieved throughout the thickness of the tapes when heat-treated in a magnetic field (Ha) whereas a large portion of nontextured region exists without magnetic field. The critical current density Jc of the tapes increases with increasing Ha due to enhancement in texture. The self field critical Ic > 1000 A was achieved for tapes with a core thickness of 180 μm. However, for tapes with larger core thicknesses, Ic decreases due to inhomogeneous melting. The magnetic field is more effective in enhancing texture in the early stages of crystal growth.
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U2 - 10.1109/TASC.2003.812309
DO - 10.1109/TASC.2003.812309
M3 - Conference article
AN - SCOPUS:0042976325
SN - 1051-8223
VL - 13
SP - 3339
EP - 3342
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2 III
T2 - 2002 Applied Superconductivity Conference
Y2 - 4 August 2002 through 9 August 2002
ER -