A-AXIS ORIENTED EPITAXIAL YBA2CU3O7-X-PRBA2CU3O7-Y HETEROSTRUCTURES

被引：172

作者：

INAM, A ^{[1
]}

ROGERS, CT ^{[1
]}

RAMESH, R ^{[1
]}

REMSCHNIG, K ^{[1
]}

FARROW, L ^{[1
]}

HART, D ^{[1
]}

VENKATESAN, T ^{[1
]}

WILKENS, B ^{[1
]}

机构：

[1] UNIV VIENNA,INST PHYS CHEM,A-1010 VIENNA,AUSTRIA

来源：

APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 23期

关键词：

D O I：

10.1063/1.104179

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have grown YBa2Cu3O7-x-PrBa 2Cu3O7-y heterostructures with the perovskite a axis normal to the surface of a variety of (001) oriented substrates using the pulsed laser deposition technique. X-ray diffraction studies indicate little or no formation of the traditional c-axis normal orientation usually nucleated on these substrates, while ion channeling, transmission electron microscopy (TEM), and Raman scattering studies reveal a highly ordered crystalline structure similar in quality to that obtained in the best c-axis oriented films. Superconducting transition temperatures, for current transport in the plane of the films, consistently exceed 80 K, but are probably lower than the optimum 92 K transition expected for YBa2Cu3O7-x due to the presence of growth twin boundaries between grains with the c axis oriented along the two substrate directions.

引用

页码：2484 / 2486

页数：3

共 14 条

[1] LARGELY ANISOTROPIC SUPERCONDUCTING CRITICAL CURRENT IN EPITAXIALLY GROWN BA2YCU3O7-Y THIN-FILM [J].