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Very high critical current in a long YBa2Cu3O7−δ single crystalline rod (1991)

Aguillon, C. ; McCartney, D. G. ; Regnier, P. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 69 (1991), S. 8261-8264

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: We studied by magnetic and microscopic techniques a disk (2.0 mm diam and 1.0 mm thick) sliced from a quasi single-crystalline rod prepared by very slow solidification in a small temperature gradient. The sample presents features very similar to a typical millimetric single crystal obtained by the standard flux methods. We deduced a high critical current density Jc from magnetic measurements: 2×106 A/cm2 at 4.2 K in a 3T field parallel to the c axis. The transport critical current density along the rod axis (i.e., ∼45° off the c axis) was found to be about 7000 A/cm2 at 77 K in zero applied field. It is comparable to that deduced from the hysteresis cycle at the same temperature for the same current direction.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.347433

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