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Critical Current Density of YBa{2}Cu{3}O{7-d} Low-Angle Grain Boundaries in Self-Field

D. T. Verebelyi·C. Cantoni·J. D. Budai·D. K. Christen·H. J. Kim·J. R. Thompson
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Abstract

A study has been perfomed on the superconducting critical current density J_{c} flowing across low angle grain boundaries in epitaxial thin films of YBa{2}Cu{3}O{7-d} (YBCO). The materials studied were dual grain boundary rings deposited on SrTiO{3} and containing 2, 3, 5 and 7 degree tilt boundaries. The current density in self-field was determined by magnetometric methods at temperatures from 5 K to T_c. We conclude that at the higher temperatures of coated conductor applications, there is limited potential for improving J_{c} by reducing the grain boundary angle below about 3 degrees.

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D. T. Verebelyi, C. Cantoni, J. D. Budai, D. K. Christen, H. J. Kim, J. R. Thompson. 2001-02-05. Critical Current Density of YBa{2}Cu{3}O{7-d} Low-Angle Grain Boundaries in Self-Field. https://doi.org/10.1063/1.1360230

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