CORRELATION BETWEEN IRREVERSIBILITY MAGNETIC-FIELDS AND THE LONGEST CU-O LAYER SPACING IN HIGH-T(C) SUPERCONDUCTORS

被引：42

作者：

NABATAME, T ^{[1
]}

SATO, J ^{[1
]}

SAITO, Y ^{[1
]}

AIHARA, K ^{[1
]}

KAMO, T ^{[1
]}

MATSUDA, SP ^{[1
]}

机构：

[1] HITACHI CABLE LTD,ADV RES CTR,TSUCHIURA,IBARAKI 300,JAPAN

来源：

PHYSICA C | 1992年 / 193卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90961-B

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thin films of the (1223) phase of the Tl-Sr-Ca-Cu-O system (Tl-(1223), single Tl-O layer) and the (2223) phase of the Tl-Ba-Ca-Cu-O system (Tl-(2223), double Tl-O layers) were prepared by the laser ablation method. The irreversibility magnetic field (H*) obtained from the resistivity change in magnetic fields were found to be 2.0 T and 14.4 T at T/T(c) = 0.6 for Tl-(2223) and Tl-(1223), respectively. The H* of high T(c)-superconductors including Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O systems are shown to depend strongly on the longest Cu-O layer spacing (d), i.e. the H* decreases in the order, Y-(123) > Tl-(1223) >> Tl-(2223) > Bi-(2212). The phenomenon may be the result of Josephson weak coupling between the superconducting Cu-O layers. It seems that the longest Cu-O interlayer spacing determines the H* for a magnetic field applied perpendicular to the a-b plane.

引用

页码：390 / 394

页数：5

共 20 条

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