All data presented originate from the materials' datasheets. The significant part is played by the "Complex Permeability vs. Frequency" chart. Here are all key parameters taken from. The Q factors at different frequencies are simply the μ'/μ" ratios graphically abstracted from the chart.
For your coil/filter design, try to keep clear of the steep rise in loss (μ"). In most cases, the safe area is to the left of the Q=100 mark.
