Surface resistance and structure of LuBa2Cu3O7-δ superconducting films prepared by MOCVD

被引：0

作者：

Samoylenkov, SV

Gorbenko, OY

Kaul, AR

Graboy, IE

Tarasov, VF

Taborov, VF

Pan, VM

Bobrik, VV

Svetchnikov, VL

Zandbergen, HW

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia

[2] Natl Acad Sci Ukraine, GV Kurdyumov Inst Metal Phys, UA-252680 Kyyiv 142, Ukraine

[3] Delft Univ Technol, Natl Ctr HREM, NL-2628 AL Delft, Netherlands

来源：

METALLOFIZIKA I NOVEISHIE TEKHNOLOGII | 1998年 / 20卷 / 04期

关键词：

surface resistance; thin epitaxial film; sapphire substrate; MOCVD; microwave loss;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

LuBa2Cu3O7-delta/LaAlO3 (delta = 0.03 and 0.15) and LuBa2C3O7-deltaCeO2/Al2O3 thin epitaxial films were prepared by flash evaporation MOCVD, and their structural (XRD and TEM) and microwave characterization was performed. LuBa2Cu3O7-delta/LaAlO3 films showed remarkably lower values of surface resistance R-s (77 K, 32 GHZ) as compared to the copper. The temperature dependence of R-s for LuBa2Cu3O7-delta/LaAlO3 films was observed to be consistent with the optimization of the hole concentration in CuO2 planes of LuBa2Cu3O7-delta structure at delta approximate to 0.15. The electrophysical properties of LuBa2Cu3O7-delta/CeO2/Al2O3 sample were found to be relatively poor, probably, due to the large amount of secondary phases in the sample.

引用

页码：3 / 6

页数：4

共 8 条

[1]

CHISHOLM MF, 1989, PHILOS MAG A, V59, P181, DOI 10.1080/01418618908205053

[2] COMPOSITION, TEXTURE AND MAGNETIC-PROPERTIES OF YBACUO THIN-FILMS OBTAINED BY MOCVD [J].