Preparation and properties of precursor Ba-Ca-Cu(O, F) thin films deposited from fluorides for superconducting Tl- and Hg-based films

被引：9

作者：

Chromik, S

Jergel, M

Hanic, F

Jimenez, S

Jergel, M

Strbík, V

Falcony, C

Benacka, S

Cheang-Wong, JC

Andrade, E

机构：

[1] CINVESTAV, Dept Fis, Mexico City 07000, DF, Mexico

[2] Slovak Acad Sci, Inst Elect Engn, Bratislava 84239, Slovakia

[3] Slovak Acad Sci, Inst Measurement Sci, Bratislava 84219, Slovakia

[4] Slovak Acad Sci, Inst Phys, Bratislava 84228, Slovakia

[5] CINVESTAV, Lab Invest Mat, Queretaro 76010, Qro, Mexico

[6] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico

来源：

THIN SOLID FILMS | 2000年 / 373卷 / 1-2期

关键词：

Ba-Ca-Cu-(O; F); precursors; Tl2Ba2CaCu2Oy films; fluorides; X-ray diffraction;

D O I：

10.1016/S0040-6090(00)01118-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Precursor Ba-Ca-Cu-(O, F) thin films prepared by thermal evaporation of BaF2, CaF2 and Cu show good chemical resistance against the atmosphere even after a partial defluorination by means of vacuum annealing with subsequent oxidation. The prepared precursor films were characterized by X-ray diffraction (XRD) analyses and Raman scattering measurements. A possible explanation for the observed properties is presented. According to the XRD measurements performed in the grazing incidence set-up, a polycrystalline cubic BaCuO2 is the main phase after defluorination followed by oxidation. No peaks attributable to carbides (as a consequence of atmospheric exposure of the samples) were identified. Raman analysis confirmed the presence of another phase, namely CuO. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：129 / 133

页数：5