Abstract
The compounds NH4MF3 (M= Mg, Zn, Co, Mn, Cd) have the cubic perovskite structure at high temperature, distorting to quasi-tetragonal symmetry at lower temperatures (fig. 1). In a previous communication /1/, some discrepancies between the electrostatic model and experimental data were discussed, mainly the high barrier (2000 K) to rotation of NH4 groups in NH4CdF3.
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© 1987 Springer-Verlag Berlin Heidelberg
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Palacios, E. et al. (1987). Spectroscopic Raman Study of Trifluoroperovskites of Ammonium Under High Pressure. In: Heidemann, A., Magerl, A., Richter, D., Prager, M., Springer, T. (eds) Quantum Aspects of Molecular Motions in Solids. Springer Proceedings in Physics, vol 17. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-71914-1_7
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DOI: https://doi.org/10.1007/978-3-642-71914-1_7
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