Quantum mechanical study of YTiO3 to the investigation of piezoelectricity
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
22/06/2011
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Resumo |
In previous articles we reported through theoretical studies the piezoelectric effect in BaTiO3, SmTiO3, and YFeO3. In this paper, we used the Douglas-Kroll-Hess (DKH) second-order scalar relativistic method to investigate the piezoelectricity in YTiO3. In the calculations we used the [6s4p] and [10s5p4d] Gaussian basis sets for the O (3P) and Ti (5S) atoms, respectively, from the literature in combination with the (30s21p16d)/[15s9p6d] basis set for the Y ( 3D) atom, obtained by generator coordinate Hartree-Fock (GCHF) method, and they had their quality evaluated using calculations of total energy and orbital energies (HOMO and HOMO-1) of the 2TiO+1 and 1YO+1 fragments. The dipole moment, the total energy, and the total atomic charges in YTiO3 in C s space group were calculated. When we analyze those properties we verify that it is reasonable to believe that YTiO3 does not present piezoelectric properties. Copyright © 2011 Raimundo Dirceu de Paula Ferreira et al. |
Identificador |
http://dx.doi.org/10.1155/2011/123492 Physics Research International. 1687-689X 1687-6903 http://hdl.handle.net/11449/72499 10.1155/2011/123492 2-s2.0-79959222729 2-s2.0-79959222729.pdf |
Idioma(s) |
eng |
Relação |
Physics Research International |
Direitos |
openAccess |
Tipo |
info:eu-repo/semantics/article |