Irradiation-induced inter- and intra-granular modifications by 120 MeV S ions in YBa2Cu3O7 thick films

被引：9

作者：

Behera, D ^{[1
]}

Patnaik, K

Mishra, NC

机构：

[1] Utkal Univ, Dept Phys, Bhubaneswar 751004, Orissa, India

[2] Ctr Nucl Sci, New Delhi 110067, India

来源：

MODERN PHYSICS LETTERS B | 2001年 / 15卷 / 02期

关键词：

D O I：

10.1142/S0217984901001483

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The evolution of microstructure under swift heavy ion (SHI) irradiation is probed in a granular medium such as YBCO thick films prepared through diffusion reaction technique. From the temperature-dependent in situ resistivity measurement during ion irradiation, we have been able to isolate the irradiation induced modifications at the grain boundaries and the grains. With 120 MeV S ion irradiation, we show that in addition to damaging the insulating grain boundaries and hence destroying superconducting phase coherence, ion irradiation brings about an improvement in the microstructure of the cuprates. Irradiation is shown to induce alignment of the grains in an otherwise randomly oriented granular superconductor.

引用

页码：69 / 80

页数：12

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