CRITICAL CURRENT-DENSITY AND FLUX PINNING DOMINATED BY NEUTRON-IRRADIATION INDUCED DEFECTS IN YBA2CU3O7-X

被引：5

作者：

LESSURE, HS ^{[1
]}

SIMIZU, S ^{[1
]}

SANKAR, SG ^{[1
]}

MCHENRY, ME ^{[1
]}

COST, JR ^{[1
]}

MALEY, MP ^{[1
]}

机构：

[1] UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545

来源：

JOURNAL OF APPLIED PHYSICS | 1991年 / 70卷 / 10期

关键词：

D O I：

10.1063/1.349891

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The functional dependence of critical current density (J(c)) upon defect density is studied with neutron irradiation of YBa2Cu3O7-x. Identical polycrystalline samples of YBa2Cu3O7-x have been irradiated with fast neutrons (E > 0.1 MeV) in eight steps between 0 and 2.1 x 10(18) n/cm2. Critical current densities are obtained from magnetic hysteresis measurements and correlated with defect density measurements obtained from transmission electron microscopy. We observe that despite the existence of a significant degree of hysteresis in the as grown material the hysteretic J(c) in the irradiated samples appears to be dominated by a power law dependence on neutron fluence with an exponent of approximately 1/3 over a wide range of temperature, field and fluence.

引用

页码：6513 / 6515

页数：3

共 13 条

[1]

BEDNORZ JG, 1986, Z PHYS B, V64, P18

[2] FLUX VORTICES AND TRANSPORT CURRENTS IN TYPE II SUPERCONDUCTORS [J].

CAMPBELL, AM ;

EVETTS, JE .

ADVANCES IN PHYSICS, 1972, 21 (90) :199-+

[3] OXYGEN-DEFECT FLUX PINNING, ANOMALOUS MAGNETIZATION AND INTRAGRAIN GRANULARITY IN YBA2CU3O7-DELTA [J].

DAEUMLING, M ;

SEUNTJENS, JM ;

LARBALESTIER, DC .

NATURE, 1990, 346 (6282) :332-335

[4]

FEITZ WA, 1969, PHYS REV, V178, P657

[5] THE STRUCTURE OF NEUTRON-IRRADIATION DAMAGE IN YBA2CU3O7-X [J].

KIRK, MA ;

FRISCHHERZ, MC ;

LIU, JZ ;

GREENWOOD, LR ;

WEBER, HW .

PHILOSOPHICAL MAGAZINE LETTERS, 1990, 62 (01) :41-49

[6] FAST-NEUTRON IRRADIATION OF YBA2CU3O7 [J].

KUPFER, H ;

APFELSTEDT, I ;

SCHAUER, W ;

FLUKIGER, R ;

MEIERHIRMER, R ;

WUHL, H ;

SCHEURER, H .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1987, 69 (2-3) :167-171

[7] FLUX PINNING IN NEUTRON-IRRADIATED YBA2CU3O7-X [J].

LESSURE, HS ;

SIMIZU, S ;

BAUMERT, BA ;

SANKAR, SG ;

MCHENRY, ME ;

MALEY, MP ;

COST, JR ;

WILLIS, JO .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) :1043-1046

[8] DEPENDENCE OF FLUX-CREEP ACTIVATION-ENERGY UPON CURRENT-DENSITY IN GRAIN-ALIGNED YBA2CU3O7-X [J].

MALEY, MP ;

WILLIS, JO ;

LESSURE, H ;

MCHENRY, ME .

PHYSICAL REVIEW B, 1990, 42 (04) :2639-2642

[9] NEUTRON-IRRADIATION EFFECTS ON CRITICAL CURRENT DENSITIES IN SINGLE-CRYSTALLINE YBA2CU3O7-DELTA [J].

SAUERZOPF, FM ;

WIESINGER, HP ;

KRITSCHA, W ;

WEBER, HW ;

CRABTREE, GW ;

LIU, JZ .

PHYSICAL REVIEW B, 1991, 43 (04) :3091-3100

[10]

UMEZAWA A, 1987, PHYS REV B, V36, P7157

← 1 2 →