Evidence of progressive Fe2+ to Fe3+oxidation in Fe2+-doped ZnO nanoparticles

Autor: F. F. H. Aragón, L. Villegas-Lelovsky, J. G. Parizaka, E. G. Zela, R. Bendezu, R. O. Gallegos, D. G. Pacheco-Salazar, S. W. da Silva, R. Cohen, L. C. C. M. Nagamine, J. A. H. Coaquira, P. C. Morais

Publikováno v: Materials Advances. 4:1389-1402

When Fe-ions enter into the ZnO NPs, their oxidation state can be tuned and the excitonic peak enlarges, indicating that the ZnO lattice becomes more disordered. The AFM interactions found in paramagnetic NPs become stronger as Fe content increases.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8780beff24c8383c54099d4596175e8
https://doi.org/10.1039/d3ma00053b

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Tuning intrinsic defects in ZnO films by controlling the vacuum annealing temperature: an experimental and theoretical approach

Autor: K J Paz-Corrales, C A Vilca-Huayhua, F F H Aragón, L Villegas-Lelovsky, J A H Coaquira, S W da Silva, G E Marques, M D Teodoro, D G Pacheco-Salazar

Publikováno v: Physica Scripta. 97:075811

The control of native defects in the ZnO material is strongly important for a wide range of technological applications. In this paper, native defects are tuned via the post-thermal treatment of ZnO films in a high vacuum atmosphere. The microstructur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b2d0735b78db03f4d5387f15c6ef3faf
https://doi.org/10.1088/1402-4896/ac758b

Tuning the magnetic properties of Sn1-x-yCe4+xCe3+yO2 nanoparticles: an experimental and theoretical approach

Autor: A. Mesquita, Matheus P. Lima, L. Cabral, F. F. H. Aragón, L. Villegas-Lelovsky, J.A.H. Coaquira

Publikováno v: Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
CONCYTEC-Institucional
Consejo Nacional de Ciencia Tecnología e Innovación Tecnológica
instacron:CONCYTEC

Made available in DSpace on 2021-06-25T12:40:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-03-07 CONCYTEC -FONDECYT Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40c78288b94e7a72ce860adc0bcbdd76

A DFT study of structural and electronic properties of anatase TiO2 phase with Ni and oxygen vacancies impurities

Autor: L. Villegas-Lelovsky, S.A. De la Torre Pari, D.G. Pacheco. Salazar, F.F.H. Aragón

Publikováno v: Anais do VIII Simpósio de Estrutura Eletrônica e Dinâmica Molecular.

In the present work, first-principle theory using the functional density theory (DFT) was used in the ABINIT software package using the PBE pseudopotential (norm-conserving pseudopotentials). To determine the structural parameters such as lattice con

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b62eb10efa1010bda1fbbab8d93d7489
https://doi.org/10.21826/viiiseedmol2020106