No 2, Vol. 1, 2000 
 

INTERFACES AND MISFIT DEFECTS IN NANOSTRUCTURED AND POLYCRYSTALLINE FILMS

I.A.Ovid'ko
Institute of Problems of Mechanical Engineering
Russian Academy of Sciences
Bolshoj 61, Vas.Ostrov, St.Petersburg 199178, Russia
E-mail: ovidko@def.ipme.ru

Abstract

Theoretical models are reviewed which describe misfit defect structures at interfaces (intergrain and interphase boundaries) in nanostructured and polycrystalline films. The specific structural and behavioral features of interfaces in nanostructured and polycrystalline films are discussed which influence the macroscopic properties of such films. The special attention is paid to theoretical models describing partial misfit dislocation structures, misfit disclinations, misfit dislocation walls, grain boundary dislocations as misfit defects and partly incoherent interphase boundaries in nanostructured and polycrystalline films. Also, the effects of misfit strains on phase transformations in multilayer composites as well as the behavior of nano-islands on composite substrates are considered.

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