Flux pinning in YBa2Cu3O7-delta thin films with ordered arrays of columnar defects

被引：70

作者：

Lin, JY

Gurvitch, M

Tolpygo, SK

Bourdillon, A

Hou, SY

Phillips, JM

机构：

[1] NATL SUN YAT SEN UNIV,DEPT PHYS,KAOHSIUNG 804,TAIWAN

[2] SUNY STONY BROOK,DEPT MAT SCI & ENGN,STONY BROOK,NY 11794

[3] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.54.R12717

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ordered arrays of columnar defects have been fabricated by direct electron-beam writing on c(perpendicular to)-oriented YBa2Cu3O7-delta (YBCO) thin films. Serving as strong pinning sites, columnar defects cause a 70% enhancement of critical current density J(c) at T=77 K in magnetic fields parallel to the c axis. The matching effect of the pinning force density has been observed, due to commensurability between flux lines and arrays of columnar defects. The pinning strength of columnar defects has been compared with that of point defects, and found to be greater than the latter in YBCO films. These results suggest that this way of pinning center fabrication could be a promising tool in studies of the pinning mechanism in high-temperature superconductors.

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页码：12717 / 12720

页数：4

相关论文

共 28 条

[1] COMPOSITE FLUX-LINE LATTICES STABILIZED IN SUPERCONDUCTING FILMS BY A REGULAR ARRAY OF ARTIFICIAL DEFECTS [J].

BAERT, M ;

METLUSHKO, VV ;

JONCKHEERE, R ;

MOSHCHALKOV, VV ;

BRUYNSERAEDE, Y .

PHYSICAL REVIEW LETTERS, 1995, 74 (16) :3269-3272

[2] VORTICES IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

BLATTER, G ;

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI ;

VINOKUR, VM .

REVIEWS OF MODERN PHYSICS, 1994, 66 (04) :1125-1388

[3] SERIES OF MAXIMA IN THE FIELD-DEPENDENT MAGNETIC-MOMENT OF LAYERED SUPERCONDUCTORS [J].

BRONGERSMA, SH ;

VERWEIJ, E ;

KOEMAN, NJ ;

DEGROOT, DG ;

GRIESSEN, R ;

IVLEV, BI .

PHYSICAL REVIEW LETTERS, 1993, 71 (14) :2319-2322

[4] EFFECTS OF 300 MEV AU+24 ION IRRADIATION ON SUPERCONDUCTIVITY IN YBA2CU3O7 EPITAXIAL-FILMS [J].

BUDHANI, RC ;

ZHU, Y ;

SUENAGA, M .

APPLIED PHYSICS LETTERS, 1992, 61 (08) :985-987

[5] VORTEX CONFINEMENT BY COLUMNAR DEFECTS IN YBA2CU3O7 CRYSTALS - ENHANCED PINNING AT HIGH FIELDS AND TEMPERATURES [J].

CIVALE, L ;

MARWICK, AD ;

WORTHINGTON, TK ;

KIRK, MA ;

THOMPSON, JR ;

KRUSINELBAUM, L ;

SUN, Y ;

CLEM, JR ;

HOLTZBERG, F .

PHYSICAL REVIEW LETTERS, 1991, 67 (05) :648-651

[6] VORTEX-LINE PINNING BY THICKNESS MODULATION OF SUPERCONDUCTING FILMS [J].

DALDINI, O ;

MARTINOLI, P ;

OLSEN, JL ;

BERNER, G .

PHYSICAL REVIEW LETTERS, 1974, 32 (05) :218-221

[7] CRITICAL CURRENTS ASSOCIATED WITH INTERACTION OF COMMENSURATE FLUX-LINE SUBLATTICES IN A PERFORATED AL FILM [J].

FIORY, AT ;

HEBARD, AF ;

SOMEKH, S .

APPLIED PHYSICS LETTERS, 1978, 32 (01) :73-75

[8] PRODUCTION AND IDENTIFICATION OF FLUX-PINNING DEFECTS BY ELECTRON-IRRADIATION IN YBA2CU3O7-X SINGLE-CRYSTALS [J].

GIAPINTZAKIS, J ;

LEE, WC ;

RICE, JP ;

GINSBERG, DM ;

ROBERTSON, IM ;

WHEELER, R ;

KIRK, MA ;

RUAULT, MO .

PHYSICAL REVIEW B, 1992, 45 (18) :10677-10683

[9]

HILLMANN H, UNPUB

[10] SYSTEMATIC TRENDS OF YBA2CU3O7-DELTA THIN-FILMS POST ANNEALED IN LOW-OXYGEN PARTIAL PRESSURES [J].

HOU, SY ;

PHILLIPS, JM ;

WERDER, DJ ;

TIEFEL, TH ;

MARSHALL, JH ;

SIEGAL, MP .

JOURNAL OF MATERIALS RESEARCH, 1994, 9 (08) :1936-1945