High-resolution 27Al MAS NMR spectroscopic studies of the response of spinel aluminates to mechanical action

Vladimir Šepelák, Ingo Bergmann, Sylvio Indris, Armin Feldhoff, Horst Hahn, Klaus-Dieter Becker, Clare P. Grey & Paul Heitjans
The response of the local structure of various types of spinel aluminates, ZnAl2O4 (normal spinel), MgAl2O4 (partly inverse spinel), and Li0.5Al2.5O4 (fully inverse spinel), to mechanical action through high-energy milling is investigated by means of 27Al MAS NMR. Due to the ability of this nuclear spectroscopic technique to probe the local environment of Al nuclei, valuable quantitative insight into the mechanically induced changes in the spinel structure, such as the local cation disorder and the...
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