Anisotropy modulated stepwise magnetization in triangular Heisenberg antiferromagnet

▸ Variation of M steps is investigated by tuning anisotropy from Ising type to zero. ▸ Anisotropy is essential to induce T-dependent multistep M against magnetic field. ▸ Simulation with strong anisotropy reproduces T-evolution of M steps in Ca3Co2O6. ▸ Metastable substeps at low T can be enhanced by increasing anisotropy.