  We present a quantitative investigation of magnetic domain wall pinning in
thin magnets with perpendicular anisotropy. A self-consistent description
exploiting the universal features of the depinning and thermally activated
sub-threshold creep regimes observed in the field driven domain wall velocity,
is used to determine the effective pinning parameters controlling the domain
wall dynamics: the effective height of pinning barriers, the depinning
threshold, and the velocity at depinning. Within this framework, the analysis
of results published in the literature allows for a quantitative comparison of
pinning properties for a set of magnetic materials in a wide temperature range.
On the basis of scaling arguments, the microscopic parameters controlling the
pinning: the correlation length of pinning, the collectively pinned domain wall
length (Larkin length) and the strength of pinning disorder, are estimated from
the effective pinning and the micromagnetic parameters. The analysis of thermal
effects reveals a crossover between different pinning length scales and
strengths at low reduced temperature.
