NONLINEAR AC EFFECT AND DISSIPATION IN WEAK-LINK MEDIUM OF HIGH-TC SUPERCONDUCTORS

被引：3

作者：

ATSARKIN, VA ^{[1
]}

DEMIDOV, VV ^{[1
]}

NOGINOVA, NE ^{[1
]}

VASNEVA, GA ^{[1
]}

BUSH, AA ^{[1
]}

机构：

[1] MOSCOW RADIOENGN ELECTR & AUTOMAT INST,MOSCOW 117454,USSR

来源：

PHYSICS LETTERS A | 1991年 / 154卷 / 7-8期

关键词：

D O I：

10.1016/0375-9601(91)90044-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of low-frequency (0.03-3500 MHz) ac magnetic modulation and transport current on rf (10 MHz) losses have been investigated in Y- and Bi-based high-T(c) superconducting ceramics, films and crystals. The additional rf absorption DELTA-chi" was observed and found to be proportional to the absolute value of the ac shielding current flowing through the dissipative weak-link medium. The data are consistent with the thermally activated flux flow model with allowance made for a wide, close to uniform, distribution of the pinning energies.

引用

页码：416 / 420

页数：5

共 19 条

[1] FAST MAGNETIC-RELAXATION DETECTED BY TRANSIENT RF AND MICROWAVE-ABSORPTION IN HIGH-TC CERAMICS [J].

ATSARKIN, VA ;

VASNEVA, GA ;

DEMIDOV, VV ;

NOGINOVA, NE .

SOLID STATE COMMUNICATIONS, 1990, 74 (07) :603-607

[2] MICROWAVE STUDY OF THE CRITICAL STATE IN HIGH-TC SUPERCONDUCTORS [J].

BLAZEY, KW ;

PORTIS, AM ;

BEDNORZ, JG .

SOLID STATE COMMUNICATIONS, 1988, 65 (10) :1153-1156

[3]

BUSH AA, 1990, SFKHT, V3, P432

[4]

CLEM JR, 1976, PHYS REV B, V14, P1893, DOI 10.1103/PhysRevB.14.1893

[5] MODEL FOR FLUX CREEP IN HIGH-TC SUPERCONDUCTORS [J].

DEWHUGHES, D .

CRYOGENICS, 1988, 28 (10) :674-677

[6] 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

[7] WEAK-LINK STRUCTURE IN YBA2CU3O7 SINGLE-CRYSTALS - A MICROWAVE STUDY [J].

DULCIC, A ;

CREPEAU, RH ;

FREED, JH ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

PHYSICAL REVIEW B, 1990, 42 (04) :2155-2160

[8] DISTRIBUTION OF FLUX-PINNING ENERGIES IN YBA2CU3O7-DELTA AND BI2SR2CACU2O8+DELTA FROM FLUX NOISE [J].

FERRARI, MJ ;

JOHNSON, M ;

WELLSTOOD, FC ;

CLARKE, J ;

MITZI, D ;

ROSENTHAL, PA ;

EOM, CB ;

GEBALLE, TH ;

KAPITULNIK, A ;

BEASLEY, MR .

PHYSICAL REVIEW LETTERS, 1990, 64 (01) :72-75

[9] RESISTIVE BEHAVIOR OF HIGH-TC SUPERCONDUCTORS - INFLUENCE OF A DISTRIBUTION OF ACTIVATION-ENERGIES [J].

GRIESSEN, R .

PHYSICAL REVIEW LETTERS, 1990, 64 (14) :1674-1677

[10] THERMALLY ASSISTED FLUX FLOW AT SMALL DRIVING FORCES [J].

KES, PH ;

AARTS, J ;

VANDENBERG, J ;

VANDERBEEK, CJ ;

MYDOSH, JA .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1989, 1 (05) :242-248

← 1 2 →