DC AND MICROWAVE PROPERTIES OF YBA2CU3OX THIN-FILMS IN A WEAK MAGNETIC-FIELD

被引：17

作者：

MAHEL, M ^{[1
]}

ADAM, R ^{[1
]}

DARULA, M ^{[1
]}

CHROMIK, S ^{[1
]}

BENACKA, S ^{[1
]}

机构：

[1] COMENIUS UNIV, DEPT SOLID STATE PHYS, CS-84215 BRATISLAVA, CZECHOSLOVAKIA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1992年 / 202卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90166-A

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurements of the transport critical current and the modulated microwave absorption in low magnetic fields up to 15 mT are presented for granular crystallographically disordered as well as for c-axis oriented YBa2Cu3Ox thin films at 4.2 and 77 K. Both the transport critical current and the microwave losses are believed to be determined by the weak links existing in both types of samples. The intergranular critical state and the influence of the intragranular magnetization are introduced in order to account for the magnetic hysteresis effects. The experimental results are fitted by a theoretical model, and the differences between disordered and oriented thin films are discussed.

引用

页码：243 / 248

页数：6

共 21 条

[1]

BARONE A, 1982, PHYSICS APPLICATIONS

[2] MAGNETIZATION OF HARD SUPERCONDUCTORS [J].

BEAN, CP .

PHYSICAL REVIEW LETTERS, 1962, 8 (06) :250-+

[3] HIGHLY ORIENTED Y1BA2CU3O7 THIN-FILMS PREPARED IN SITU BY VACUUM COEVAPORATION [J].

CHROMIK, S ;

STRBIK, V ;

HANIC, F ;

SMATKO, V ;

ADAM, R ;

BENACKA, S .

PHYSICA B, 1990, 165 :1493-1494

[4] YBCO SUPERCONDUCTING THIN-FILMS PREPARED BY VACUUM COEVAPORATION WITHOUT POST TREATMENT IN OXYGEN [J].

CHROMIK, S ;

STRBIK, V ;

BENACKA, S ;

LEVARSKY, J ;

SITH, J ;

PLECENIK, A ;

GAZI, S ;

SMATKO, V ;

SCHILDER, J .

IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (02) :2484-2486

[5] GRANULAR AND SUPERCONDUCTING-GLASS PROPERTIES OF THE HIGH-TEMPERATURE SUPERCONDUCTORS [J].

CLEM, JR .

PHYSICA C, 1988, 153 :50-55

[6]

DENISOV YP, 1976, FIZ TVERD TELA+, V18, P119

[7] MECHANISMS OF FIELD-DEPENDENT MICROWAVE-ABSORPTION IN HIGH-TC CERAMIC SUPERCONDUCTORS [J].

DULCIC, A ;

RAKVIN, B ;

POZEK, M .

EUROPHYSICS LETTERS, 1989, 10 (06) :593-598

[8] TRANSPORT CRITICAL CURRENT OF ALIGNED POLYCRYSTALLINE Y1BA2CU3O7-DELTA AND EVIDENCE FOR A NONWEAK-LINKED COMPONENT OF INTERGRANULAR CURRENT CONDUCTION [J].

EKIN, JW ;

HART, HR ;

GADDIPATI, AR .

JOURNAL OF APPLIED PHYSICS, 1990, 68 (05) :2285-2295

[9] RELATION OF CRITICAL CURRENT IRREVERSIBILITY TO TRAPPED FLUX AND MICROSTRUCTURE IN POLYCRYSTALLINE YBA2CU3O7 [J].

EVETTS, JE ;

GLOWACKI, BA .

CRYOGENICS, 1988, 28 (10) :641-649

[10]

FISTUL MV, 1989, JETP LETT, V49, P95

← 1 2 3 →