<i>Ab initio</i> studies on ammonium iodine under high pressure

Ab initio studies on ammonium iodine under high pressure

Lu Mengya¹, Huang Yanping¹, Tian Fubo^{1, †}, Li Da¹, Duan Defang¹, Zhou Qiang¹, Cui Tian^{1, 2, ‡}

The calculated phonon dispersion curves of NH₄I for (a) phase V at 80 GPa, (b) the Ibam phase at 90 GPa, (c) the Cm phase at 120 GPa and (d) the P1 phase at 160 GPa.