DC Bias Dependence of Material Properties

One or more PRAP analysed resonance files can be added to a PRAP compound file (of extension '.PZC'). If each of these resonance files was acquired from samples with different applied DC bias voltages, or if each sample had a different thickness, each parameter can be plotted as a function of DC bias field.

Once a material property is plotted as a function of DC bias field, voltage, etc., a general, even, or odd polynomial can be fitted to the property using the 'Non-linear Regression' command of the Tools menu. The coefficients of the fitted polynomial can then be used in additional studies of your materials.

To study the effect of DC bias field;

Open a new compound file with the 'New Compound File' command of the File menu.
Using the 'Add PZF File' command of the File menu, add the spectra you wish to study.
Ensure that each spectrum has been analysed. You can do this by displaying each included resonance scan with the 'Display Resonance Scan' menu command from the Window menu.
Select the 'Display Axes' command of the Window menu.
For the x-axis, select the type of DC bias field or voltage to be the dependent variable.
For the y-axis, select the material property to be studied. The list of available properties is limited to those available from the analysed resonance spectra included in the compound file.
Select 'OK'. The real and imaginary parts of the selected property will be plotted as a function of the selected DC bias field or voltage.
The results can be copied to another Windows application with the Copy command of the File menu.

Optional DC Bias Data Acquisition Module

An optional data acquisition module is available that allows resonance spectra to be automatically collected and analysed as a function of DC bias voltage. This removes the tedium and chance for error of manually collecting individual resonance scans, analysing them, and adding them to a compound file. It also permits a significantly faster throughput of analysed samples. This optional module requires the PRAP basic data acquisition module.

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