Dauwe, C.Costa, Geraldo Magela daVan Hoecke, T.Segers, D.2017-05-302017-05-301995DAUWE, C. et al. Formation and annealing of micropores in hematite. Acta Physica Polonica A, v. 88, p. 119-123, 1995. Disponível em: <http://przyrbwn.icm.edu.pl/APP/PDF/88/a088z1p16.pdf>. Acesso em: 20 abr. 2017.1898-749Xhttp://www.repositorio.ufop.br/handle/123456789/7826In iron oxide powders positrons are trapped in the surface layers and the value of the S-parameter is an indicator of the total specific surface, including external surface and internal surfaces of micropores. The evolution of micropores is followed when α-FeOOH is thermally decomposed into α-Fe2O3 . It is shown that the micropore formation is not linked to the decomposition process, but that they also form in hematite synthesized from a ferrihydrite precursor in aqueous solution.en-USrestritoArtigo publicado em periodicohttp://przyrbwn.icm.edu.pl/APP/PDF/88/a088z1p16.pdfhttp://dx.doi.org/10.12693/APhysPolA.88.119