Initial magnetic field strength B_init generated by the small-scale dynamo (the top panel) and the final magnetic field strength B_f generated by the α−Ω dynamo (middle panel) for a 10 M_⊙ central star with an accretion rate of 10^-3M_⊙ yr^-1. In the bottom panel, we show the orbital timescale, the growth time of the α–Ω dynamo, and the ordering timescale. The left panels represent the CIE cooling regime, while the right panels show the regime of H₂ line cooling.