Phase transition and compression of LiNbO3 under static high pressure
- 1 February 1985
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 57 (3) , 842-844
- https://doi.org/10.1063/1.334682
Abstract
Lattice parameters of LiNbO3 were measured at room temperature over the pressure range 0–35 GPa by x‐ray diffraction using the diamond anvil cell. In the region below 13 GPa (where a hydrostatic pressure was maintained) the pressure dependence of the volume can be well described by the Birch–Murnaghan equation of state, yielding B0=134±3 GPa for the zero‐pressure bulk modulus and B’0 =2.9±0.5 for its pressure derivative. A phase transformation was detected at 30±3 GPa both by x‐ray diffraction and by optical observation of the change from a transparent to an opaque state. The pattern of the high‐pressure phase was tentatively indexed on the basis of a cubic cell with a=6.78 Å.This publication has 9 references indexed in Scilit:
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