The Peierls-Nabarro model revisited

被引：66

作者：

Lu, G

Kioussis, N ^{[1
]}

Bulatov, VV

Kaxiras, E

机构：

[1] Calif State Univ Northridge, Dept Phys, Northridge, CA 91330 USA

[2] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[3] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2000年 / 80卷 / 10期

关键词：

D O I：

10.1080/09500830050143778

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We re-examine two important issues within the Peierls- Nabarro model, which are critical in obtaining accurate values for the Peierls stress. The first is related to the sampling scheme (double versus single counting) of the misfit energy across the glide plane and the second is the effect of atomic relaxation on the Peierls stress. We argue that the double-counting scheme is physically more appropriate. An analytical formula is derived for the Peierls stress of dislocations in alternating lattices. The atomic relaxation is shown to play an important role on the Peierls stress.

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页码：675 / 682

页数：8

相关论文

共 15 条

[1] Semidiscrete variational Peierls framework for dislocation core properties [J].

Bulatov, VV ;

Kaxiras, E .

PHYSICAL REVIEW LETTERS, 1997, 78 (22) :4221-4224

[2] DISLOCATIONS AND STACKING FAULTS [J].

CHRISTIA.JW ;

VITEK, V .

REPORTS ON PROGRESS IN PHYSICS, 1970, 33 (04) :307-&

[3] Peierls barriers and stresses for edge dislocations in Pd and Al calculated from first principles [J].

Hartford, J ;

von Sydow, B ;

Wahnstrom, G ;

Lundqvist, BI .

PHYSICAL REVIEW B, 1998, 58 (05) :2487-2496

[4]

HIRTH JP, 1982, THEORY DISLOCATION, P237

[5] The Peierls stress of dislocations: An analytic formula [J].

Joos, B ;

Duesbery, MS .

PHYSICAL REVIEW LETTERS, 1997, 78 (02) :266-269

[6]

JOOS B, 1994, PHYS REV B, V50, P5980

[7] Generalized stacking fault energy surfaces and dislocation properties of silicon: A first-principles theoretical study [J].

Juan, YM ;

Kaxiras, E .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1996, 74 (06) :1367-1384

[8] Generalized-stacking-fault energy surface and dislocation properties of aluminum [J].

Lu, G ;

Kioussis, N ;

Bulatov, VV ;

Kaxiras, E .

PHYSICAL REVIEW B, 2000, 62 (05) :3099-3108

[9] Critical analysis of local constitutive models for slip and decohesion [J].

Miller, R ;

Phillips, R .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1996, 73 (04) :803-827

[10] A non-local formulation of the Peierls dislocation model [J].

Miller, R ;

Phillips, R ;

Beltz, G ;

Ortiz, M .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1998, 46 (10) :1845-1867