LOWER CRITICAL-FIELD OF YNI2B2C AND THE INFLUENCE OF GRANULARITY

被引：15

作者：

GHOSH, K ^{[1
]}

RAMAKRISHNAN, S ^{[1
]}

GROVER, AK ^{[1
]}

CHANDRA, G ^{[1
]}

RAO, TVC ^{[1
]}

MISHRA, PK ^{[1
]}

RAVIKUMAR, G ^{[1
]}

SAHNI, VC ^{[1
]}

机构：

[1] BHABHA ATOM RES CTR,DIV SOLID STATE PHYS,BOMBAY 400085,MAHARASHTRA,INDIA

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.52.68

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the determination of the lower critical field (Hc1) of the newly discovered borocarbide superconductor YNi2B2C (YNBC). Our Hc1(T) data seem to fit to the relation Hc1(0) [1-(T/Tc)2] over a wide temperature range and they give Hc1(0) a value (22 mT) which is consistent with a recent analysis based on Ginzberg-Landau theory. A deviation from the said relationship is observed near Tc(0) and we show that it is a consequence of the intergranularity effect in a polycrystalline superconductor. © 1995 The American Physical Society.

引用

页码：68 / 70

页数：3

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