ON THE DEPENDENCIES OF THE COEFFICIENT OF THERMAL EXPANSION VERSUS SIZE AND SHAPE OF NANOCRYSTAL

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов

M.N. Magomedov¹ 

[1] Institute of Geothermy Problems, Dagestan Scientific Center, Russian Academy of Sciences;

关键词: nanocrystal;    size;    shape of the surfaces;    thermal expansion.;   

DOI  :  

来源: DOAJ

【 摘 要 】

A model of nanocrystal in the form of a rectangular parallelepiped with a variable surface shape (RP-model) is used to study of the dependencies of the coefficient of thermal expansion (αp) versus size and surface shape of the nanocrystal of the simple matter. The calculations for the nanocrystal of silicon have shown that αp increases at reduction N, moreover at reduction of the temperature the dependency αp(N) is increasing. At the isomorphous reduction N along isotherm of 100K the function αp(N) at defined size (for cube N≅1125) passes from the negative into the positive field.

【 授权许可】

Unknown