Influence of substrate and precursor film composition on morphology and superconducting transition of T1-2212 thin films characterized by microwaves

被引：10

作者：

Chromik, S ^{[1
]}

Jergel, M

Gazi, S

Strbík, V

Hanic, F

Falcony, C

Vasko, M

Benacka, S

机构：

[1] SAS, Inst Elect Engn, Bratislava 84239, Slovakia

[2] Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Fis, Mexico City 07000, DF, Mexico

[3] SAS, Inst Measurement Sci, Bratislava 84219, Slovakia

来源：

PHYSICA C | 2001年 / 354卷 / 1-4期

关键词：

T1-based thin films; morphology; microwaves;

D O I：

10.1016/S0921-4534(01)00110-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An influence of various substrates (MgO, LaAlO3, SrTiO3, YSZ, CeO2/r-sapphire) and Ba-Ca-Cu precursor chemical composition (212, 223) upon morphology and microwave quality of Tl2Ba2CaCu2O8 (T1-2212) thin films has been studied. Under the same thalliation conditions, T1-2212 phase has been synthesized in all films independently of the initial precursor film chemical composition (212, 223) with almost the same T-c values. However, the film surface morphology and, thus, the microwave surface impedance, both were found to be strongly dependent from the type of substrate used as well as from the precursor chemical composition. Films with sharp transition to the superconducting state were prepared when 212 precursors were deposited on the MgO and/or LaAlO3 substrates. (C) 2001 Elsevier Science B.V, All rights reserved.

引用

收藏

页码：429 / 432

页数：4

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