A study of the magnetization reversal process in a co-precipitated cobalt ferrite material at 300K was carried out. The evolution of the reversible M r e v and irreversible M i r r magnetization components were determined by measuring sets of recoil curves from different points on the initial magnetization curve and demagnetization curve. From these data, M r e v (M i r r ) H i curves were built, being H i the internal field of the sample. The interrelation function η=(M r e v /M i r r ) H i was determined as well. The results suggest that domain wall movement subject to pinning is the dominant mechanism for the reversal magnetization process in this material.