  We present domain-specific magnetization reversals extracted from soft x-ray
resonant magnetic scattering measurement on a permalloy square ring array. The
extracted domain-specific hysteresis loops reveal that the magnetization of the
domain parallel to the field is strongly pinned, while those of other domains
rotate continuously. In comparison with the micromagnetic simulation, the
hysteresis loop on the pinned domain indicates a possibility of the coexistence
of the square rings with the vortex and onion states.
