Improvement of the superconducting transition and demagnetization factor in YBa2Cu3O7-delta single crystals by laser cutting

被引：1

作者：

Bhattacharya, A ^{[1
]}

Grupp, DE ^{[1
]}

Goldman, AM ^{[1
]}

Welp, U ^{[1
]}

机构：

[1] ARGONNE NATL LAB,ARGONNE,IL 60439

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 12期

关键词：

D O I：

10.1063/1.117488

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single crystals of YBa2Cu3O7-delta have been cut into disc shapes using an excimer laser. The bulk superconducting transition was found to be sharpened in all cases measured. This is associated with the removal of material at the edges which may be depleted of oxygen or otherwise damaged. The magneto-optical images for one crystal have been correlated with the optical image. The angular dependence of the demagnetizing factor for field applied in the plane was drastically reduced in disc-shaped crystals relative to rectangular ones. The held of first flux entry was also increased. (C) 1996 American Institute of Physics.

引用

页码：1792 / 1794

页数：3

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