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The discovery of van der Waals (vdW) materials exhibiting non-trivial andtunable magnetic interactions at room temperature can give rise to exoticmagnetic states, which are not readily attainable with conventional materials.Such vdW magnets can provide a unique platform for studying new magneticphenomena and realising magnetization dynamics for energy-efficient andnon-volatile spintronic memory and logic technologies. Recent developments invdW magnets have revealed their potential to enable spin-orbit torque (SOT)induced magnetization dynamics. However, the deterministic and field-free SOTswitching of vdW magnets at room temperature has been lacking, prohibitingtheir potential applications. Here, we demonstrate magnetic field-free anddeterministic SOT switching of a vdW magnet (Co0.5Fe0.5)5GeTe2 (CFGT) at roomtemperature, capitalizing on its non-trivial intrinsic magnetic ordering. Wediscover a coexistence of ferromagnetic and antiferromagnetic orders in CFGT atroom temperature, inducing an intrinsic exchange bias and canted perpendicularmagnetism. The resulting canted perpendicular magnetization of CFGT introducessymmetry breaking, facilitating successful magnetic field-free magnetizationswitching in the CFGT/Pt heterostructure devices. Furthermore, the SOT-inducedmagnetization dynamics and their efficiency are evaluated using 2nd harmonicHall measurements. This advancement opens new avenues for investigating tunablemagnetic phenomena in vdW material heterostructures and realizing field-freeSOT-based spintronic technologies.

Coexistence of non-trivial van der Waals magnetic orders enable field-free spin-orbit torque switching at room temperature