Al2O3 additions for isothermal melt processing of Bi2Sr2CaCu2Oy

Holesinger, T.G.

doi:10.1557/jmr.1996.0272

Cited by 18 publications

(3 citation statements)

References 17 publications

(22 reference statements)

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“…Better formation of Bi-2212 phase in Al 2 O 3 -doped BSCCO was also mentioned in [8,10,21] and was connected with the modification of a Bi-2212 peritectic decomposition process and the composition of the liquid.…”

Section: Processes Of Glass Crystallizationmentioning

confidence: 87%

Generation of Squeezed Vacuum Using Wavelength-Tunable Soliton Pulse and Nonlinear Polarization Interferometer

Higuchi

Nishizawa

Mori

et al. 2004

Jpn. J. Appl. Phys.

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Section: Processes Of Glass Crystallizationmentioning

confidence: 87%

Generation of Squeezed Vacuum Using Wavelength-Tunable Soliton Pulse and Nonlinear Polarization Interferometer

Higuchi

Nishizawa

Mori

et al. 2004

Jpn. J. Appl. Phys.

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“…11,194,195 Doping with alumina is often used to modify the properties of the generic superconducting system. In this connection, the effect of Al 2 O 3 on the superconducting transition temperatures of Bi2212 and (Bi,Pb)2223, 197 ± 199 on the ability of the phases in the generic system to undergo glass transitions, 200,201 on the microstructure of molten Bi2212, 197 on the mechanical properties of a (Bi,Pb)2223-based composite (see Ref. 198) and on the pinning force of the magnetic vortices in Bi2212 (see Refs 202 and 203) was studied.…”

Section: Microcomposites Based On Phases Of the Bi ± (Pb) ± Sr ± Ca ±...mentioning

confidence: 99%

Microcomposites based on superconducting cuprates

Казин¹,

Tretyakov²

2003

Russ. Chem. Rev.

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Chemical aspects of the formation of microcomposites Chemical aspects of the formation of microcomposites based on superconducting cuprates are considered. The materials based on superconducting cuprates are considered. The materials are composed of a superconducting ceramic matrix and micro-or are composed of a superconducting ceramic matrix and micro-or nanoinclusions of the non-superconducting phase, which are nanoinclusions of the non-superconducting phase, which are uniformly distributed in the matrix. Requirements on the operat-uniformly distributed in the matrix. Requirements on the operating characteristics of the superconducting ceramics are described ing characteristics of the superconducting ceramics are described and routes to high critical current densites are outlined. Phase and routes to high critical current densites are outlined. Phase equilibria in the generic systems are considered. Physical and equilibria in the generic systems are considered. Physical and chemical criteria for the choice of phases that can form non-chemical criteria for the choice of phases that can form nonsuperconducting inclusions are proposed. Methods of prepara-superconducting inclusions are proposed. Methods of preparation and the microstructures and superconducting properties tion and the microstructures and superconducting properties of the composites based on cuprates RBa of the composites based on cuprates RBa 2 2 Cu Cu 3 3 O O 7 77 7d d (R is the (R is the rare-earth element) and on Bi rare-earth element) and on Bi 2 2 Sr Sr 2 2 CaCu CaCu 2 2 O O 8+ 8+d d and and (Bi,Pb) (Bi,Pb) 2 2 Sr Sr 2 2 Ca Ca 2 2 Cu Cu 3 3 O O 10+ 10+d d are considered. The bibliography are considered. The bibliography includes 247 references includes 247 references. .

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“…(ii) the floating zone method [6], directional isothermal growth [7], the melt-casting process [8] or composite reaction texturing [9] and (iii) adding Al 2 O 3 to thick films [10] and MgO to tapes [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of adding MgO to bulk Bi2212 melt textured in a high magnetic field

Pavard¹,

Villard²,

Bourgault³

et al. 1998

Supercond. Sci. Technol.

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Bulk samples of Bi2212 pure and doped with MgO or were prepared by melt processing in a high magnetic field. The structure of the samples was analysed using XRD and SEM and their transport properties were studied. The results show that when a magnetic field is applied during melt processing the bulk Bi2212 is textured with the c-axis parallel to the field direction. The addition of MgO induces an improvement in the material properties. This is not observed using . A significant improvement is observed at 77 K in the critical current density in self-field and in an external magnetic field. This improvement can be related to the better texturation obtained when MgO is added: it maintains high viscosity during melt processing and thus the texturation induced by the magnetic field is not weakened by liquid-phase spreading. The addition of MgO also induces a decrease in volume of residual phases. The improvement in properties in an external magnetic field can be attributed to a better indirect vortex pinning due to submicron MgO-rich inclusions in the superconducting matrix.

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Al₂O₃ additions for isothermal melt processing of Bi₂Sr₂CaCu₂O_y

Cited by 18 publications

References 17 publications

Generation of Squeezed Vacuum Using Wavelength-Tunable Soliton Pulse and Nonlinear Polarization Interferometer

Generation of Squeezed Vacuum Using Wavelength-Tunable Soliton Pulse and Nonlinear Polarization Interferometer

Microcomposites based on superconducting cuprates

Effect of adding MgO to bulk Bi2212 melt textured in a high magnetic field

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