STRUCTURAL AND COMPOSITIONAL CHARACTERIZATION OF (YBA2CU3O7)M/(PRBA2CU3O7)N SUPERLATTICES BY MEANS OF HIGH-RESOLUTION ELECTRON-MICROSCOPY

被引：26

作者：

JIA, CL ^{[1
]}

SOLTNER, H ^{[1
]}

JAKOB, G ^{[1
]}

HAHN, T ^{[1
]}

ADRIAN, H ^{[1
]}

URBAN, K ^{[1
]}

机构：

[1] TH DARMSTADT, INST FESTKORPERPHYS, W-6100 DARMSTADT, GERMANY

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1993年 / 210卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(93)90003-9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The structural and compositional properties of (YBa2Cu3O7)m/(PrBa2Cu3O7)n (m=1, n=6 and m=4, n=4) superlattices produced by high-pressure oxygen DC-sputtering were investigated by high-resolution transmission electron microscopy employing a chemically sensitive imaging technique. The width of the growth terraces of the individual layers indicates a relatively smooth surface of the sputtered films which grow in a two-dimensional growth mode. Interface steps and antiphase boundaries exist in both superlattices. In the 1 X 6 superlattice these defects critically disturb the continuity and superconducting qualities of the single-unit-cell layers of YBa2Cu3O7. From the contrast analysis it can be concluded that interdiffusion between YBa2Cu3O7 and PrBa2Cu3O7 layers must be very low.

引用

页码：1 / 15

页数：15

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