Mossbauer investigations of natural and synthetic tochilinite and valleriiteстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Samples of natural and synthetic tochilinites and valleriites were investigated by Mossbauer spectroscopy. Synthesis of tochilinite was carried out at different temperatures and Fe/Mg ratio in the initial mixture. The relative amounts of obtained phases as functions of Mg atom relative content in the initial mixture were derived. It was shown that Mg atoms preferred to occupy one of two nonequivalent positions in brucite-like layers when entering the tochilinite structure. Parameters of hyperfine interaction were determined for valleriite and crystal chemical identification of Fe-57 subspectra was carried out.