AM‐Hloop model for Ba‐ferrite particulate media is introduced where a modified Stoner–Wohlfarth model is used as a magnetization reversal model. It is confirmed that this model can be applied for read/write simulation of Ba ferrite. Using this model, the read/write performance of Ba‐ferrite media is investigated and compared with that of acicular particulate media. The results indicate that: (i) For high‐density recording, longitudinally oriented Ba ferrite is superior to acicular particulate media because of its high coercive squarenessS*; (ii) to improve read/write performance of the Ba‐ferrite in use today, narrowing of anisotropy field distribution is effective; and (iii) perpendicularly oriented Ba ferrite has good read/write performance only at narrow head‐medium spacings.