MAGNETICALLY MELT TEXTURED YBA2CU3O7-DELTA - DISAGREEMENT BETWEEN JC DETERMINED BY MAGNETIC AND DIRECT TRANSPORT MEASUREMENTS. Bourgault, D., Derango, P., Barbut, J., M., Braithwaite, D., Lees, M., R., Lejay, P., Sulpice, A., & Tournier, R. Physica C, 194(1-2):171-176, 1992. Website abstract bibtex Textured YBa2CU3O7-delta (Y - 123) ceramic material has been prepared from a mixture Of Y2BaCuO5, BaCUO2 and CuO, by solidification in a magnetic field of 7 T. The application of the magnetic field during solidification allows one to control the orientation of the crystals within the material. An annealing temperature above 1040-degrees-C is necessary to obtain a well textured ceramic. The composition of the starting material has an influence on the form of the sample: an excess of 25% by weight of Y2BaCuO5 allows the initial form of the sample to be preserved. Electrical transport and magnetization measurements are reported. Transport critical current densities of 7200 A/cm2 in a magnetic field of 2 T and 4300 A/cm2 in 6 T in the case H parallel-to ab planes have been observed at 77 K. A transport critical current density of 1600 A/cm2 in 6 T in the case H parallel-to c-axis has been measured, in spite of the fact that critical currents deduced from magnetic measurements using the Bean model are negligible for fields in excess of 5 T.
@article{
title = {MAGNETICALLY MELT TEXTURED YBA2CU3O7-DELTA - DISAGREEMENT BETWEEN JC DETERMINED BY MAGNETIC AND DIRECT TRANSPORT MEASUREMENTS},
type = {article},
year = {1992},
identifiers = {[object Object]},
keywords = {superconductors},
pages = {171-176},
volume = {194},
websites = {<Go to ISI>://WOS:A1992HV26300026},
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notes = {ISI Document Delivery No.: HV263<br/>Times Cited: 19<br/>Cited Reference Count: 12<br/>Bourgault, d derango, p barbut, jm braithwaite, d lees, mr lejay, p sulpice, a tournier, r<br/>Elsevier science bv<br/>Amsterdam},
abstract = {Textured YBa2CU3O7-delta (Y - 123) ceramic material has been prepared from a mixture Of Y2BaCuO5, BaCUO2 and CuO, by solidification in a magnetic field of 7 T. The application of the magnetic field during solidification allows one to control the orientation of the crystals within the material. An annealing temperature above 1040-degrees-C is necessary to obtain a well textured ceramic. The composition of the starting material has an influence on the form of the sample: an excess of 25% by weight of Y2BaCuO5 allows the initial form of the sample to be preserved. Electrical transport and magnetization measurements are reported. Transport critical current densities of 7200 A/cm2 in a magnetic field of 2 T and 4300 A/cm2 in 6 T in the case H parallel-to ab planes have been observed at 77 K. A transport critical current density of 1600 A/cm2 in 6 T in the case H parallel-to c-axis has been measured, in spite of the fact that critical currents deduced from magnetic measurements using the Bean model are negligible for fields in excess of 5 T.},
bibtype = {article},
author = {Bourgault, D and Derango, P and Barbut, J M and Braithwaite, D and Lees, M R and Lejay, P and Sulpice, A and Tournier, R},
journal = {Physica C},
number = {1-2}
}
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