I use to do XRD from room temperature to High temperature and then cooling again at room temperature. I see there is constant going to the right for all the peaks and also their intensities are decreasing, also the width of peaks is becoming larger. I would like to interpret those data and also to calculate the particle size and the unit cell size (if there is a change with the temperature). It seems the phase is not change only the garbages and the intensities values. Could you help me to interpret those data or to guide to read something on the web to help me with this? Thank you!