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11 p, 1.2 MB Mineralogical, chemical, and physical characterization of synthetic al-substituted maghemites (γ-fe2-xalxo3) / Batista, Marco Alexandre da Silva (Universidade Estadual de Maringá. UEM, Departamento de Agronomia) ; da Costa, Antonio C. S. (Universidade Estadual de Maringá. UEM, Departamento de Agronomia) ; Bigham, Jerry M. (The Ohio State University. School of Environment and Natural Resources) ; de Santana, Henrique (Universidade Estadual de Londrina. UEL, Departamento de Quemica) ; Zaia, Dimas A. M. (Universidade Estadual de Londrina. UEL, Departamento de Quemica) ; de Souza Junior, Ivan G. (Universidade Estadual de Maringá. UEM, Departamento de Agronomia)
Maghemite (γ-FeO) is a ferrimagnetic Fe oxide commonly found in tropical and subtropical soils, especially in the topsoil where it is usually a product of burning. Isomorphic substitution (IS) of the Fe in maghemite by different metals (mainly Al) can modify its mineralogical and chemical attributes, and these modifications may be important to understanding the formation and properties of this mineral in soils and sediments. [...]
2010 - 10.1346/CCMN.2010.0580401
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 451-461  

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