ORTHO-II STRUCTURE IN ABA2CU3O7-DELTA COMPOUNDS (A=ER, ND, PR, SM, YB)

被引：64

作者：

KREKELS, T ^{[1
]}

ZOU, H ^{[1
]}

VANTENDELOO, G ^{[1
]}

WAGENER, D ^{[1
]}

BUCHGEISTER, M ^{[1
]}

HOSSEINI, SM ^{[1
]}

HERZOG, P ^{[1
]}

机构：

[1] UNIV BONN,INST STRAHLEN & KERNPHYS,W-5300 BONN 1,GERMANY

来源：

PHYSICA C | 1992年 / 196卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90458-O

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Oxygen ordering has been investigated in superconducting ABa2Cu3O7-delta ceramic materials with A = Er, Nd, Sm and Yb, as well as in samples of this type with the rate earth A partially substituted by Pr. The critical temperature T(c) was determined as a function of the oxygen deficiency-delta of the compound and the corresponding microstructures were investigated by electron diffraction and electron microscopy. A distinct relationship exists between the width of the 60 K plateau and the ortho II ordering. Our results show that the ortho II ordered phase is the superconducting phase with a characteristic T(c) of 60 K.

引用

页码：363 / 368

页数：6

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