Low-temperature anharmonicity and symmetry breaking in the sodalite |Na8I2|[AlSiO4]6
Lars Robben , Isaac Abrahams, Michael Fischer, Stephen Hull, Martin T. Dove und ThorstenM.Gesing Zeitschrift für Kristallographie - Crystalline Materials (2018) 234 , Heft 4 https://doi.org/10.1515/