Abstract
YBa2Cu3Oy (Y123) bulk materials were textured with artificially patterned holes, creating a ‘perforatedstructure’. The goal is to facilitate sample oxygenation and decrease crack formation in orderto address the problem of hot spot formation in fault current limiter (FCL) applications.As-processed samples contained mechanically patterned holes parallel to the meanc-axis interconnected to the textured domain. This makes samples easier to oxygenate andcool. The microstructure is not distorted in the vicinity of the holes. The single domaincharacter of the sample is evidenced by XRD pole figure investigations. Meander trackswere prepared by drilling the upper and lower surfaces of the samples. Samples containingholes still trap high fields, comparable with samples without holes. Values ofJc are increased in samples with holes.
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