Critical current density and microstructures of thick monocore Bi2212 tapes grown in high magnetic fields

H. Maeda, P. V.P.S.S. Sastry, U. P. Trociewitz, J. Schwartz, K. Ohya, M. Sato

Research output: Contribution to journalConference article

7 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)3339-3342
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2 III
DOIs
StatePublished - Jun 1 2003
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: Aug 4 2002Aug 9 2002

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Tapes
tapes
critical current
Magnetic fields
current density
microstructure
Microstructure
textures
magnetic fields
Textures
heat tapes
crystal growth
Crystallization
Crystal growth
melting
Melting
heat
augmentation
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Maeda, H. ; Sastry, P. V.P.S.S. ; Trociewitz, U. P. ; Schwartz, J. ; Ohya, K. ; Sato, M. / Critical current density and microstructures of thick monocore Bi2212 tapes grown in high magnetic fields. In: IEEE Transactions on Applied Superconductivity. 2003 ; Vol. 13, No. 2 III. pp. 3339-3342.
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abstract = "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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Critical current density and microstructures of thick monocore Bi2212 tapes grown in high magnetic fields. / Maeda, H.; Sastry, P. V.P.S.S.; Trociewitz, U. P.; Schwartz, J.; Ohya, K.; Sato, M.

In: IEEE Transactions on Applied Superconductivity, Vol. 13, No. 2 III, 01.06.2003, p. 3339-3342.

Research output: Contribution to journalConference article

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.

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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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