trihalide

Absorption Spectra of NH$_4$MnCl$_3$ and NH$_4$MnF$_3$
The absorption spectra of NH$_4$MnCl$_3$ and NH$_4$MnF$3$ crystals have been measured down to 10 K in the 250 to 600 nm region. The …
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Dynamics of the NH$_4^+$ Ion in ABX$_3$ Perovskites
The Raman and IR spectra of NH$_4$MnF$_3$, NH$_4$ZnF$_3$ and NH$_4$MnCl$_3$ have been measured in order to study the internal vibration …
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