Tl2Ba2CaCu2O8 thin films on 2 in. LaAlO3(001) substrates

被引：12

作者：

Yan, SL ^{[1
]}

Fang, L ^{[1
]}

He, M ^{[1
]}

Lu, RT ^{[1
]}

Zhao, XJ ^{[1
]}

Lu, X ^{[1
]}

Jia, YX ^{[1
]}

Wang, JW ^{[1
]}

Zhou, TG ^{[1
]}

机构：

[1] Nankai Univ, Dept Elect, Tianjin 300071, Peoples R China

来源：

CRYOGENICS | 2005年 / 45卷 / 01期

关键词：

superconducting thin film; Tl2Ba2CaCu2O8; surface resistance;

D O I：

10.1016/j.cryogenics.2004.08.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

High quality Tl2Ba2CaCu2O8 (Tl-2212) superconducting thin films are prepared on both sides of 2 in. LaAlO3(0 0 1) substrates by off-axis magnetron sputtering and post-annealing process. XRD measurements show that these films possess pure Tl-2212 phase with C-axis perpendicular to the substrate surface. The thickness unhomogeneity of the whole film on the 2 in. wafer is less than 5%. The superconducting transition temperatures T(c)s of the films are around 105K. At zero applied magnetic field, the critical current densities J(c)s of the films on both sides of the wafer were measured to be above 2 x 10(6) A/cm(2) at 77K. The microwave surface resistance R-s of film was as low as 350 muOmega at 10GHz and 77K. In order to test the suitability of Tl-2212 thin films for passive microwave devices, 3-pole bandpass filters have been fabricated from double-sided Tl-2212 films on LaAlO3 substrates. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：41 / 44

页数：4

共 7 条

[1] Y-Ba-Cu-O thin films on 3" sapphire wafers for microwave devices [J].

Aidam, R ;

Geerk, J ;

Linker, G ;

Ratzel, F ;

Reiner, J ;

Schneider, R ;

Smithey, R ;

Zaitsev, AG ;

Gaganidze, E ;

Schwab, R .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2001, 11 (01) :357-360

[2] Large area YBa2Cu3O7 and Tl2Ba2CaCU2O8 thin films for microwave and electronic applications [J].

Face, DW ;

Small, RJ ;

Warrington, MS ;

Pellicone, FM ;

Martin, PJ .

PHYSICA C, 2001, 357 (SUPPL. 1) :1488-1494

[3] The preparation of two inch double-sided YBCO thin films [J].

Liu, XZ ;

Tao, BW ;

Deng, XW ;

Zhang, Y ;

Li, YR .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2002, 15 (12) :1698-1700

[4] TlBaCaCuO-(2212) thin films on lanthanum aluminate and sapphire substrates for microwave filters [J].

Schneidewind, H ;

Manzel, M ;

Bruchlos, G ;

Kirsch, K .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2001, 14 (04) :200-212

[5] The stability of epitaxial Tl2Ba2CaCu2O8 thin films in water [J].

Yan, SL ;

Fang, L ;

Si, MS ;

Wang, J ;

Cao, HL ;

Song, QX ;

Zhou, XD ;

Hao, JM .

SOLID STATE COMMUNICATIONS, 1996, 98 (08) :723-725

[6] THE GROWTH AND SUPERCONDUCTING PROPERTIES OF EPITAXIAL TL2BA2CACU2O8 THIN-FILMS [J].

YAN, SL ;

FANG, L ;

SI, MS ;

CAO, HL ;

SONG, QX ;

YAN, J ;

ZHOU, XD ;

HAO, JM .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1994, 7 (09) :681-684

[7] FORMATION OF EPITAXIAL TL2BA2CACU2O8/THIN FILMS AT LOW-TEMPERATURE IN PURE ARGON [J].

YAN, SL ;

FANG, L ;

SONG, QX ;

YAN, J ;

ZHU, YP ;

CHEN, JH ;

ZHANG, SB .

APPLIED PHYSICS LETTERS, 1993, 63 (13) :1845-1847

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