REDUCED FLUX MOTION VIA FLUX CREEP ANNEALING IN HIGH-JC SINGLE-CRYSTAL Y1BA2CU3O7

被引：28

作者：

THOMPSON, JR

SUN, YR

MALOZEMOFF, AP

CHRISTEN, DK

KERCHNER, HR

OSSANDON, JG

MARWICK, AD

HOLTZBERG, F

机构：

[1] UNIV TENNESSEE,KNOXVILLE,TN 37996

[2] IBM CORP,THOMAS J WATSON LAB,YORKTOWN HTS,NY 10598

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 20期

关键词：

D O I：

10.1063/1.105918

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the stabilization of magnetic flux in a high-temperature superconductor (a proton-irradiated Y1Ba2Cu3O7 crystal), by operating with subcritical current density J. Using the thermal history to obtain an induced current density J less-than-or-equal-to J(c), we observed a drastically reduced relaxation rate dM/dt (M = magnetization), after "flux creep annealing." The results show that the field gradient approximately J approximately M determined the relaxation rate, independent of the sample's H-T history, in agreement with recent theory.

引用

收藏

页码：2612 / 2614

页数：3

相关论文

共 16 条

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

ANDERSON, PW .

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

[2] HARD SUPERCONDUCTIVITY - THEORY OF MOTION OF ABRIKOSOV FLUX LINES [J].

ANDERSON, PW ;

KIM, YB .

REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) :39-&

[3] FLUX CREEP IN TYPE-2 SUPERCONDUCTORS [J].

BEASLEY, MR ;

LABUSCH, R ;

WEBB, WW .

PHYSICAL REVIEW, 1969, 181 (02) :682-&

[4] DEFECT INDEPENDENCE OF THE IRREVERSIBILITY LINE IN PROTON-IRRADIATED Y-BA-CU-O CRYSTALS [J].

CIVALE, L ;

MARWICK, AD ;

MCELFRESH, MW ;

WORTHINGTON, TK ;

MALOZEMOFF, AP ;

HOLTZBERG, FH ;

THOMPSON, JR ;

KIRK, MA .

PHYSICAL REVIEW LETTERS, 1990, 65 (09) :1164-1167

[5] FLUX CREEP AND CURRENT RELAXATION IN HIGH-TC SUPERCONDUCTORS [J].

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

VINOKUR, VM .

PHYSICAL REVIEW B, 1991, 43 (07) :6263-6265

[6] THEORY OF COLLECTIVE FLUX CREEP [J].

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI ;

VINOKUR, VM .

PHYSICAL REVIEW LETTERS, 1989, 63 (20) :2303-2306

[7] HYSTERESIS IN SUPERCONDUCTING ALLOYS - TEMPERATURE AND FIELD DEPENDENCE OF DISLOCATION PINNING IN NIOBIUM ALLOYS [J].

FIETZ, WA ;

WEBB, WW .

PHYSICAL REVIEW, 1969, 178 (02) :657-&

[8] VORTEX-GLASS SUPERCONDUCTIVITY - A POSSIBLE NEW PHASE IN BULK HIGH-TC OXIDES [J].

FISHER, MPA .

PHYSICAL REVIEW LETTERS, 1989, 62 (12) :1415-1418

[9] LOW-TEMPERATURE MAGNETIC-RELAXATION IN YBA2CU3O7-DELTA - EVIDENCE FOR QUANTUM TUNNELING OF VORTICES [J].

FRUCHTER, L ;

MALOZEMOFF, AP ;

CAMPBELL, IA ;

SANCHEZ, J ;

KONCZYKOWSKI, M ;

GRIESSEN, R ;

HOLTZBERG, F .

PHYSICAL REVIEW B, 1991, 43 (10) :8709-8712

[10] REDUCTION OF THE MAGNETIZATION DECAY-RATE IN HIGH-TC SUPERCONDUCTORS [J].

LAIRSON, BM ;

SUN, JZ ;

BRAVMAN, JC ;

GEBALLE, TH .

PHYSICAL REVIEW B, 1990, 42 (01) :1008-1011