volume 70, issue 11, publication number 250
Theoretical study of physical and thermodynamic properties of AlnNm clusters*
Publication type: Journal Article
Publication date: 2016-11-26
—
Atomic and Molecular Physics, and Optics
Abstract
Geometrical structures and physical properties, such as collision diameter, rotational constants, characteristic vibrational temperatures, dipole moment, static isotropic polarizability, enthalpy of formation of various forms of Al n N m clusters with n = 0,...,5, m = 0,...,5, are analyzed with the usage of density functional theory. Different isomeric forms of these clusters with the isomerization energy up to 5 eV have been identified by using the original multistep heuristic algorithm that was based on semiempirical calculations, ab initio and density functional theory approaches and comprises the elements of genetic algorithms. Temperature dependencies of enthalpy, entropy and specific heat capacity have been calculated both for the individual isomers and for the Boltzmann ensemble of each class of clusters taking into account the anharmonicity of cluster vibrations and the contribution of excited electronic states of clusters. Novel criterion of the stability of isomeric forms, based on the maximal vibrational energy of the modes of cluster, has been proposed. The potentialities of the application of small Al n N m clusters as the components of energetic materials are also considered.
Top-30
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Citations by publishers
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Springer Nature
3 publications, 27.27%
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Elsevier
3 publications, 27.27%
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IOP Publishing
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American Chemical Society (ACS)
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1 publication, 9.09%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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