Premium
A test of the accuracy of high‐pressure measurements using a Merrill–Bassett diamond‐anvil cell
Author(s) -
Katrusiak A.,
Nelmes R. J.
Publication year - 1986
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889886089902
Subject(s) - gasket , diamond anvil cell , diffraction , simple (philosophy) , yield (engineering) , materials science , diamond , high pressure , thermal , thermodynamics , optics , composite material , physics , philosophy , epistemology
The accuracy of structural parameters obtainable from measurements carried out with a Merrill–Bassett diamond‐anvil high‐pressure cell has been tested in an X‐ray diffraction study of cubic CaF 2 . The measurements were performed at 0.0001, 0.70, 1.70, 2.60, 2.90, 3.66 and 4.42 GPa. It was found that a simple modification of the shape of the gasket can eliminate the problem of partly obscured reflections and yield reliable values for the Ca and F thermal parameters – the only variables in this simple structure, and hence particularly sensitive to any systematic errors in the data.