Inroduction
Modern materials are often disordered.
Standard crystallographic methods lose the aperiodic (disorder) information.
We would like to be able to sit on an atom and look at our neighborhood.
The PDF method allows us to do that (see next slide):
- First we do a neutron or x-ray diffraction experiment
- Then we correct the data for experimental effects
- Then we Fourier transform the data to real-space