Abstract
The conventional analysis of non-axially symmetric nuclear quadrupole interaction data requires two adjustable parameters, namely Vzz and the asymmetry parameter η, and these two parameters are plotted separately versus an external parameter, e.g. temperature. Thus 2N parameters are fitted for N temperature points. In this way, possible interdependencies of electric field gradient tensor components are ignored. The correct strategy for the data analysis would be to analyze the data conventionally, plot the data in the Czjzek-plot, and for a linear trajectory perform a simultaneous fit of all data with N + 2 adjustable parameters (N values of a control parameter plus a scale factor plus the slope) in a second tier. The concept of trajectories can be extended to non-linear trajectories.
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