RELATIONSHIP BETWEEN MICROSTRUCTURE AND OPTICAL-PROPERTIES IN HIGH T(C)-SUPERCONDUCTORS

被引：4

作者：

BABONAS, GJ ^{[1
]}

DAGYS, R ^{[1
]}

KREGZDE, V ^{[1
]}

PUKINSKAS, G ^{[1
]}

BELOKONEVA, E ^{[1
]}

LEONYUK, L ^{[1
]}

VETKIN, A ^{[1
]}

机构：

[1] MOSCOW MV LOMONOSOV STATE UNIV,DEPT GEOL,119899 MOSCOW,RUSSIA

来源：

THIN SOLID FILMS | 1993年 / 234卷 / 1-2期

关键词：

D O I：

10.1016/0040-6090(93)90319-K

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spectroscopic ellipsometry investigations on several groups of high T(c) superconductors have been performed in the region of 1-5 eV. The optical data have been compared with results of structural studies made by transmission electron microscopy and X-ray diffraction. The dependence of the optical features in the dielectric function on the microstructure of single crystals has been determined. The microstructure in a Cu(1)-O layer has been shown to be closely related to the optical features in the region of 4 eV for (123)-type compounds. The characteristic features in the dielectric function spectra have been determined for single crystals of isostructural (2212)-type phases. In Pb-based (1212)-type single crystals a strong optical anisotropy in the a-b plane has been predicted to be related to an ordering of oxygen vacancies in the Pb-O plane.

引用

页码：508 / 511

页数：4

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