On physical properties of nanoparticles

size effect and scale of nanoobjects

V. V. Uglov, I. L. Doroshevich, N. T. Kvasov, G. E. Remnev, V. I. Shymanski

Research output: Contribution to journalArticle

Abstract

A transition border between macroscopic and nanoscale states of solids associated with change of its physical properties is certain to exist. The change of mechanical, magnetic, thermal and other properties of nanoparticles may be due to the surface tension, decrease in coordination number in the top-surface layer, rebuilding of the electron shell structure, change of the symmetry group of the crystal lattice and the binding energy. Different defects of the structure can also have significant influence on the physical properties of nanoparticles. A violation of the Neumann principle with decrease of the crystal sized is constant discussed in the literature. In the present work the dependence of elastic module, Debye's temperature, melting point, thermal expansion coefficient, magnetic structure on a size of metal nanoparticles (first of all iron nanoparticles) is discussed. On the basis of the obtained results the scale border between nano- and macroscopic states is justified. In the present work the peculiarity of the physical processes (melting, diffusion, defects complexes formation) occurring in nanoparticles and nanomaterials is discussed. (

Original languageEnglish
Pages (from-to)903-907
Number of pages5
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume13
Issue number10-12
DOIs
Publication statusPublished - 1 Dec 2016

Fingerprint

physical properties
nanoparticles
borders
defects
coordination number
crystal lattices
melting points
thermal expansion
surface layers
interfacial tension
thermodynamic properties
modules
binding energy
melting
specific heat
mechanical properties
magnetic properties
iron
symmetry
coefficients

Keywords

  • coordination number
  • magnetic properties
  • nanoparticles
  • size effect
  • surface tension
  • Young's modulus

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

On physical properties of nanoparticles : size effect and scale of nanoobjects. / Uglov, V. V.; Doroshevich, I. L.; Kvasov, N. T.; Remnev, G. E.; Shymanski, V. I.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 13, No. 10-12, 01.12.2016, p. 903-907.

Research output: Contribution to journalArticle

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