Vibrational modes of α-berlinite (AlPO4)
- 1 October 1990
- journal article
- Published by IOP Publishing in Physica Scripta
- Vol. 42 (4) , 478-480
- https://doi.org/10.1088/0031-8949/42/4/019
Abstract
We present a theoretical investigation of the lattice dynamics of α-aluminium phosphate (berlinite) which takes only into account short-range interactions and axially symmetric tensor forces between (i) the first nearest-neighbours metal-oxygen or oxygen-oxygen pairs and (ii) the second nearest-neighbours metal-metal pairs. Our calculation accounts satisfactorily for the experimental phonon frequencies deduced from infrared and Raman data and for the corresponding absorption strength of Raman scattering intensities.Keywords
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