Mössbauer studies of nano-sized aluminum-substituted maghemites.
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1994
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Several 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.
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COSTA, 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.