Phase composition of KxC60 (x <= 1) samples as probed by C-13 and K-39 NMRстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Samples of KxC60 (x <= 1) have been studied by C-13 and K-39 NMR. The following phases are identified in this system at room temperature: K3C60, a solid solution of potassium in fullerite, and a potassium-containing polymer. In the K1C60 sample, the content of the polymeric phase is estimated to be as large as 90%. In all these phases, the distribution of potassium over tetrahedral and octahedral interstices remain unaltered, their ratio being 2 : 1.