INTERACTIONS OF YBA2CU3O7-X THIN-FILMS WITH ALKALINE-EARTH FLUORIDE SUBSTRATES

被引：2

作者：

PETERS, CH

BERNASEK, SL

VENKATESAN, T

PIQUE, A

HARSHAVARDHAN, KS

WU, Y

机构：

[1] NEOCERA INC,COLL PK,MD 20742

[2] RUTGERS UNIV,DEPT CHEM,PISCATAWAY,NJ 08855

来源：

JOURNAL OF APPLIED PHYSICS | 1993年 / 74卷 / 05期

关键词：

D O I：

10.1063/1.354590

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Film-substrate interactions of YBa2Cu3O7-x (YBCO) thin films grown by pulsed laser deposition on alkaline earth fluoride substrates were investigated. X-ray photoelectron spectroscopy, atomic force microscopy, and x-ray-diffraction measurements showed that the quality of the film and amount of chemical reaction between film and substrate were dependent on the substrate material and deposition temperature. The reaction of YBCO films with CaF2 and MgF2 substrates forms BaF2 and calcium or magnesium oxide species. The reacted film is insulating and has a microscopically rough surface. No reaction was detected in films deposited on BaF2 and SrF2. Physical and thermodynamic properties which may explain the observed order of reactivity are examined.

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页码：3194 / 3203

页数：10

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