MICROWAVE-POWER ABSORPTION BY THALLIUM-BASED SUPERCONDUCTORS ON METALLIC SUBSTRATES

被引：9

作者：

COOKE, DW ^{[1
]}

ARENDT, PN ^{[1
]}

GRAY, ER ^{[1
]}

BENNETT, BL ^{[1
]}

BROWN, DR ^{[1
]}

ELLIOTT, NE ^{[1
]}

REEVES, GA ^{[1
]}

ROLLETT, AD ^{[1
]}

HUBBARD, KM ^{[1
]}

PORTIS, AM ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,BERKELEY,CA 94720

来源：

APPLIED PHYSICS LETTERS | 1991年 / 58卷 / 12期

关键词：

D O I：

10.1063/1.104300

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Tl-based superconducting thick films deposited on large-area (11.4 cm2) Ag alloy (Consil 995) substrates have been characterized by surface resistance measurements yielding values of 4 and 14 m-OMEGA at 4 and 77 K, respectively, as measured in an 18 GHz Cu cavity; corresponding Cu values are 8 and 21 m-OMEGA. Utilizing a Nb cavity, the dependence of surface resistance on microwave power was also measured. The surface resistance begins to rise in microwave magnetic fields of 1-10 Oe and saturates in 20-60 Oe, the exact values depending on the degree of c-axis texturing of the polycrystalline films. Enhanced texturing sharpens the high-frequency transition into the superconducting state and also weakens the dependence of surface resistance on microwave magnetic field. These results are significant for high temperature superconductor applications such as microwave cavities.

引用

页码：1329 / 1331

页数：3

共 9 条

[1] MICROWAVE SURFACE-RESISTANCE OF MAGNETRON-SPUTTERED TL-BA-CA-CU-O FILMS ON SILVER SUBSTRATES [J].

COOKE, DW ;

GRAY, ER ;

ARENDT, PN ;

REEVES, GA ;

HOULTON, RJ ;

ELLIOTT, NE ;

BROWN, DR .

APPLIED PHYSICS LETTERS, 1990, 56 (21) :2147-2149

[2] MICROWAVE SURFACE-RESISTANCE OF YBA2CU3O7 THIN-FILMS ON LAALO3 SUBSTRATES [J].

COOKE, DW ;

GRAY, ER ;

ARENDT, PN ;

ELLIOTT, NE ;

ROLLETT, AD ;

SCHOFIELD, TG ;

MOGROCAMPERO, A ;

TURNER, LG .

JOURNAL OF APPLIED PHYSICS, 1990, 68 (05) :2514-2516

[3] MICROWAVE SURFACE-RESISTANCE AND POWER DEPENDENCE OF THALLIUM-BASED FILMS DEPOSITED ONTO LARGE-AREA SILVER SUBSTRATES [J].

COOKE, DW ;

GRAY, ER ;

ARENDT, PN ;

BENNETT, BL ;

BROWN, DR ;

ELLIOTT, NE ;

KLAPETZKY, AJ ;

REEVES, GA ;

PORTIS, AM .

JOURNAL OF SUPERCONDUCTIVITY, 1990, 3 (03) :261-267

[4]

COOKE DW, IN PRESS IEEE T MAG

[5] EPITAXIAL TL2CABA2CU2O8 THIN-FILMS WITH LOW 9.6-GHZ SURFACE-RESISTANCE AT HIGH-POWER AND ABOVE 77-K [J].

HAMMOND, RB ;

NEGRETE, GV ;

BOURNE, LC ;

STROTHER, DD ;

CARDONA, AH ;

EDDY, MM .

APPLIED PHYSICS LETTERS, 1990, 57 (08) :825-827

[6]

PADAMSEE H, 1990, 1990 LIN C ALB

[7]

PIEL H, IN PRESS IEEE T MAG

[8] POWER AND MAGNETIC FIELD-INDUCED MICROWAVE-ABSORPTION IN TL-BASED HIGH-TC SUPERCONDUCTING FILMS [J].

PORTIS, AM ;

COOKE, DW ;

GRAY, ER ;

ARENDT, PN ;

BOHN, CL ;

DELAYEN, JR ;

ROCHE, CT ;

HEIN, M ;

KLEIN, N ;

MULLER, G ;

ORBACH, S ;

PIEL, H .

APPLIED PHYSICS LETTERS, 1991, 58 (03) :307-309

[9] MICROWAVE SURFACE IMPEDANCE OF GRANULAR SUPERCONDUCTORS [J].

PORTIS, AM ;

COOKE, DW ;

PIEL, H .

PHYSICA C, 1989, 162 :1547-1548

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