Precision lattice parameter determination of coloured quartz monocrystals

Abstract
Several possibilities for the determination of relative lattice parameter changes and for the absolute measurement of lattice parameters are discussed. Special attention has been given to a measuring device for the high‐precision lattice parameter determination according to the BOND method. This device allows to determine the lattice parameters with a relative accuracy of 2 × 10−7. As an example the methods discussed are applied to the investigation of a smoky coloured quartz crystal plate and the results obtained by them were compared.