Comment on "Angle dependence of magnetization in a single-domain YBa2Cu3Oxsphere"

The model proposed by Tent et al. [Phys. Rev. B 58, 11761 (1998)] to accoun t for the angle dependence they observed in the magnetization [M] of a sing le-domain sphere in a series of zero-field-cooled hysteresis loop measureme nts with warmups above T-c between each measurement at a specific angle, is presented in a different perspective. Calculated curves of [M] versus B wh ich are symmetric with respect to theta = 0 degrees, 90 degrees, 180 degree s, etc., are shown to ensue from their model when the corrected formulas ar e exploited.