This work demonstrates that the magnetization and angular momentum compensation temperatures ($T_{\mathrm{MC}}$ and $T_{\mathrm{AMC}}$) in ferrimagnets can be unambiguously determined by performing two sets of temperature-dependent current switching, with the symmetry reversals at $T_{\mathrm{MC}}$ and $T_{\mathrm{AMC}}$, respectively. A theoretical model based on the modified Landau-Lifshitz-Bloch equation is developed to systematically study the spin torque effect under different temperatures, and numerical simulations are performed to corroborate our proposal. Furthermore, we demonstrate that the recently reported linear relation between $T_{\mathrm{AMC}}$ and $T_{\mathrm{MC}}$ can be explained using the Curie-Weiss theory.

• Received 4 December 2017
• Revised 5 February 2018

DOI:https://doi.org/10.1103/PhysRevB.97.184410