FIELD AND FREQUENCY DEPENDENCES OF THE SUSCEPTIBILITY OF GRANULAR YBCO FILMS AS A RESULT OF PINNING AND THERMALLY ASSISTED FLUX FLOW

被引：11

作者：

ARTEMOV, AN

DROBOTKO, VF

EMELYANENKOV, DG

GRISHIN, AM

KHOKHLOV, VA

MAHOV, VI

机构：

[1] Donetsk Physico-Technical Institute, the Ukrainian Academy of Sciences

来源：

PHYSICS LETTERS A | 1991年 / 157卷 / 01期

关键词：

D O I：

10.1016/0375-9601(91)90414-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The frequency and field dependences of the ac diamagnetic response of HTS films were investigated in fields of amplitudes H(ac) = 0.1-120 mOe and frequency omega/2-pi = 0.7-15 kHz. It is found that the temperature T(m) corresponding to the hysteretic loss maximum changes by the law T(m) = T(c)[1 - (H(ac)/H*)2/3ln(omega*/omega)]. This regularity is described quantitatively in the model uniting the critical state and flux creep concepts.

引用

页码：85 / 89

页数：5

共 15 条

[1] THEORY OF FLUX CREEP IN HARD SUPERCONDUCTORS [J].

ANDERSON, PW .

PHYSICAL REVIEW LETTERS, 1962, 9 (07) :309-&

[2]

Artemov A. N., 1990, International Journal of Modern Physics B, V4, P591, DOI 10.1142/S0217979290000309

[3] MAGNETIZATION OF HARD SUPERCONDUCTORS [J].

BEAN, CP .

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

[4]

CEMPBELL SA, 1983, REV SCI INSTRUM, V54, P1191

[5] THEORY OF AC LOSSES IN TYPE-II SUPERCONDUCTORS WITH A FIELD-DEPENDENT SURFACE-BARRIER [J].

CLEM, JR .

JOURNAL OF APPLIED PHYSICS, 1979, 50 (05) :3518-3530

[6] CRITICAL STATE IN DISK-SHAPED SUPERCONDUCTORS [J].

DAUMLING, M ;

LARBALESTIER, DC .

PHYSICAL REVIEW B, 1989, 40 (13) :9350-9353

[7] FREQUENCY AND FIELD-DEPENDENCE OF THE IRREVERSIBILITY LINE IN A YBA2CU3O7-DELTA FILM [J].

EMMEN, JHPM ;

STOLLMAN, GM ;

DEJONGE, WJM .

PHYSICA C, 1990, 169 (5-6) :418-424

[8]

GRISHIN AM, 1990, SOV J LOW TEMP PHYS, V12, P1524

[9] THERMALLY ACTIVATED FLUX MOTION IN HIGH-TC SUPERCONDUCTORS - AN ANALYTICAL MODEL [J].

HAGEN, CW ;

GRIESSEN, RP ;

SALOMONS, E .

PHYSICA C, 1989, 157 (02) :199-208

[10] THE COMPLEX AC SUSCEPTIBILITY OF SUPERCONDUCTING Y-BA-CUO THIN-FILM AND BULK SAMPLES [J].

LOBOTKA, P ;

GOMORY, F .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1988, 109 (01) :205-210

← 1 2 →