Abstract. Theoretical calculations focused on the stability of an infinite hexagonal AlN (h-AlN) sheet and its structural and electronic properties were carried out within the framework of DFT at the GGA-PBE level of theory. For the simulations, an h-AlN sheet model system consisting in 96 atoms per super-cell has been adopted. For h-AlN, we predict a lattice parameter of 1.82 Å and an indirect gap of 2.81 eV as well as a cohesive energy which is by 6% lower than that of the bulk (wurtzite) AlN which can be seen as a qualitative indication for synthesizability of individual h-AlN sheets. Besides the study of a perfect h-AlN sheet also the most typical defects, namely, vacancies, anti-site defects and impurities were also explored. The formation energies for these defects were calculated together with the total density of states and the corresponding projected states were also evaluated. The charge density in the region of the defects was also addressed. Energetically, the anti-site defects are the most costly, while the impurity defects are the most favorable, especially so for the defects arising from Si impurities. Defects such as nitrogen vacancies and Si impurities lead to a breaking of the planar shape of the h-AlN sheet and in some cases to formation of new bonds. The defects significantly change the band structure in the vicinity of the Fermi level in comparison to the band structure of the perfect h-AlN which can be used for deliberately tailoring the electronic properties of individual h-AlN sheets.2

RESUMOO presente artigo tem por objetivo contribuir para a crítica às bases que fundamentam a formação de professores de Educação Física dando ênfase nos pontos que não foram consenso durante a elaboração das Diretrizes Curriculares Nacionais de Educação Física (DCNEF). Compreendemos que as atuais Diretrizes estão alicerçadas às pedagogias do capital, não contribuindo dessa maneira para a formação humana. Desse modo, apontamos a necessidade de superação das DCNEF, defendendo a construção da Licenciatura Ampliada enquanto proposta de formação que atenda aos interesses da classe trabalhadora por ter uma concepção pautada no pleno desenvolvimento humano e de superação da atual sociedade.