EPR

[Guillaume Smet]

1) Prepare a crystalline sample containing paramagnetic defects
2) Mount the sample in an EPR spectrometer on a goniometer that allows precise rotation around specific crystallographic axes.
3) Align the crystal initially with its crystallographic axis (like [001]) parallel to the static magnetic field of the EPR spectrometer.
4) Set the microwave frequency to a constant value
5) Sweep the magnetic field strength while recording microwave absorption to identify resonance positions.
6) From the resonance field positions, calculate the g-factors for this specific orientation.
7) Rotate the crystal by a small angle
8) Do 5, 6 and 7 again
9) plot all of these against the rotation angele

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