Orientational order-disorder of N(D,H) + 4 in tobelite
Orientational order-disorder behavior of NH+4 is a well-established phenomenon in certain ammonium halides and ammonium salts. Anticipating similar behavior of ammonium in the interlayer site of tobelite, synthetic ND4/NH4 tobelite has been studied by infrared spectroscopy from room temperature down to 20 K. Both ND4 and NH4 are found to occupy the interlayer site in this mica structure. The spectra show noticeable changes on cooling. Autocorrelation analysis reveals distinct changes in the...[Show more]
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