Costa, Geraldo Magela daGrave, Eddy DeBryan, A. M.Bowen, L. H.2017-05-302017-05-301994COSTA, G. M. da et al. Mössbauer studies of nano-sized aluminum-substituted maghemites. Hyperfine Interactions, v. 94, p. 1983-1987, 1994. Disponível em: <https://link.springer.com/article/10.1007/BF02063727>. Acesso em: 20 abr. 2017.1572-9540http://www.repositorio.ufop.br/handle/123456789/7828Several Al-maghemites prepared from Al-lepidocrocites have been studied by M6ssbauer spectroscopy from 6 to 300 K, and also at 4.2 K with an applied field of 6 T. A linear decrease in the A and B site fields at 4.2 K for samples containing up to 10% of aluminum suggests a limit for the substitution. The importance of applied-field measurements for a correct characterization of small-particle maghemite is also shown.en-USrestritoArtigo publicado em periodicohttps://link.springer.com/article/10.1007/BF02063727https://doi.org/10.1007/BF02063727