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The emergence of spin‐orbit torques as a promising approach to energy‐efficient magnetic switching has generated large interest in material systems with easily and fully tunable spin‐orbit torques. Here, current‐induced spin‐orbit torques in VO 2 /NiFe heterostructures are investigated using spin‐torque ferromagnetic resonance, where the VO 2  layer undergoes a prominent insulator‐metal transition. A roughly twofold increase in the Gilbert damping parameter, α, with temperature is attributed to the change in the VO 2 /NiFe interface spin absorption across the VO 2  phase transition. More remarkably, a large modulation (±100%) and a sign change of the current‐induced spin‐orbit torque across the VO 2  phase transition suggest two competing spin‐orbit torque generating mechanisms. The bulk spin Hall effect in metallic VO 2 , corroborated by the first‐principles calculation of the spin Hall conductivityσ  SH   ≈  −   10  4ℏ  eΩ   −  1           m   −  1, is verified as the main source of the spin‐orbit torque in the metallic phase. The self‐induced/anomalous torque in NiFe, with opposite sign and a similar magnitude to the bulk spin Hall effect in metallic VO 2 , can be the other competing mechanism that dominates as temperature decreases. For applications, the strong tunability of the torque strength and direction opens a new route to tailor spin‐orbit torques of materials that undergo phase transitions for new device functionalities.

Tuning Spin‐Orbit Torques Across the Phase Transition in VO 2 /NiFe Heterostructure