PINNING POTENTIAL OF STACKING FAULT-RELATED DISLOCATIONS IN YBA2CU3O7

被引：9

作者：

KVAM, EP

机构：

[1] Materials Engineering, Purdue University, West Lafayette

来源：

PHYSICA C | 1992年 / 200卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90394-R

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The pinning potential of the 1/6[031] type dislocation has been calculated. This dislocation bounds the excess Cu-O layer defect commonly observed in YBa2Cu3O7. It was found that there is a strong pinning anisotropy between edge dislocations lying along [100] and [010]. For the former, a repulsive potential of about 30 meV is found, while the latter exhibits an attractive interaction of less than 1/3 this magnitude. This potential is short-range (about 2xi), indicating that these dislocations would act as distributed point-like pinning sites.

引用

收藏

页码：409 / 412

页数：4

相关论文

共 20 条

[1] CRYSTALLOGRAPHIC THERMAL-EXPANSION AND ELASTICITY ACROSS THE SUPERCONDUCTING TRANSITION IN YBA2CU3O7-DELTA [J].

BURNS, SJ ;

GOYAL, A ;

FUNKENBUSCH, PD .

PHYSICAL REVIEW B, 1989, 39 (16) :11457-11463

[2] STRUCTURAL EVIDENCE FOR AN ISOSTRUCTURAL PHASE-TRANSITION IN YBA2CU3O7-X AT THE SUPERCONDUCTING TRANSITION-TEMPERATURE [J].

DAVID, WIF ;

EDWARDS, PP ;

HARRISON, MR ;

JONES, R ;

WILSON, CC .

NATURE, 1988, 331 (6153) :245-247

[3]

FERRARI MJ, 1990, PHYS REV LETT, V64, P79

[4] STRUCTURE AND COMPOSITION OF GRAIN-BOUNDARY DISLOCATION CORES AND STACKING-FAULTS IN MOCVD-GROWN YBA2CU3O7-X THIN-FILMS [J].

GAO, Y ;

MERKLE, KL ;

BAI, G ;

CHANG, HLM ;

LAM, DJ .

PHYSICA C, 1991, 174 (1-3) :1-10

[5]

HIRTH JP, 1982, THEORY DISLOCATIONS, P445

[6] ORTHORHOMBIC DISTORTION AT THE SUPERCONDUCTING TRANSITION IN YBA2CU3O7 - EVIDENCE FOR ANISOTROPIC PAIRING [J].

HORN, PM ;

KEANE, DT ;

HELD, GA ;

JORDANSWEET, JL ;

KAISER, DL ;

HOLTZBERG, F ;

RICE, TM .

PHYSICAL REVIEW LETTERS, 1987, 59 (24) :2772-2775

[7] ENHANCED FLUX PINNING BY PHASE-DECOMPOSITION IN Y-BA-CU-O [J].

JIN, S ;

TIEFEL, TH ;

NAKAHARA, S ;

GRAEBNER, JE ;

OBRYAN, HM ;

FASTNACHT, RA ;

KAMMLOTT, GW .

APPLIED PHYSICS LETTERS, 1990, 56 (13) :1287-1289

[8] PROCESSING CONTROLLED STACKING-FAULTS IN YBA2CU3O7-DELTA AND THEIR EFFECT ON FLUX PINNING [J].

KRAMER, MJ .

APPLIED PHYSICS LETTERS, 1991, 58 (10) :1086-1088

[9] MONOCRYSTAL ELASTIC-CONSTANTS OF ORTHOTROPIC Y1BA2CU3O7 - AN ESTIMATE [J].

LEDBETTER, H ;

MING, L .

JOURNAL OF MATERIALS RESEARCH, 1991, 6 (11) :2253-2255

[10]

LI Y, 1991, MATER RES SOC SYMP P, V209, P813