| Texto completo | |
| Autor(es): |
Gomes, Eduardo O.
[1, 2]
;
Fabris, Guilherme S. L.
[3]
;
Ferrer, Mateus M.
[4]
;
Motta, V, Fabiana
;
Bomio, Mauricio R. D.
[5]
;
Andres, Juan
[1]
;
Longo, Elson
[6]
;
Sambrano, Julio R.
[3]
Número total de Autores: 8
|
| Afiliação do(s) autor(es): | [1] UJI, Dept Analyt & Phys Chem, Castellon de La Plana 12071 - Spain
[2] Univ Fed Rio Grande do Norte, LSQM Lab Chem Synth Mat, Natal, RN - Brazil
[3] Sao Paulo State Univ, Modeling & Mol Simulat Grp CDMF, BR-17033360 Bauru, SP - Brazil
[4] Univ Fed Pelotas, Dept Phys, BR-96010610 Pelotas, RS - Brazil
[5] Motta, Fabiana, V, Univ Fed Rio Grande do Norte, LSQM Lab Chem Synth Mat, Natal, RN - Brazil
[6] Univ Fed Sao Carlos, Chem Dept CDMF, POB 14801-907, Sao Carlos, SP - Brazil
Número total de Afiliações: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | COMPUTATIONAL MATERIALS SCIENCE; v. 170, DEC 2019. |
| Citações Web of Science: | 1 |
| Resumo | |
The density functional theory has become increasingly common as a methodology to explain the properties of crystalline materials because of the improvement in computational infrastructure and software development to perform such computational simulations. Although several studies have shown that the characteristics of certain classes of materials can be represented with great precision, it is still necessary to improve the methods and strategies in order to achieve more realistic computational modeling. In the present work, strategies are reported in a systematic way for the accurate representation of crystalline systems. The crystalline compound chosen for the study as a case test was BaMoO4, both because of its potential technological application and because of the low accuracy of the simulations previously reported in the literature. The computational models were carried out with the B3LYP and WC1LYP functionals selected from an initial set containing eight hybrid functionals in conjunction with an all-electron basis set. Two different strategies were applied for improving the description of the initial models, both involving atomic basis set optimization and Hartree-Fock exchange percentage adjustment. The results obtained with the two strategies show a precision of structural parameters, band gap energy, and vibrational properties never before presented in theoretical studies of BaMoO4. Finally, a flowchart of good calculation practices is elaborated. This can be of great value for the organization and conduction of calculations in new research. (AU) | |
| Processo FAPESP: | 16/07476-9 - Nanotubos porosos de carbono e de semicondutores inorgânicos: uma abordagem computacional |
| Beneficiário: | Julio Ricardo Sambrano |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais |
| Beneficiário: | Elson Longo da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |