  In this work, we study the doping effects on the magnetic states of CuCrO2
based on the classical frustrated spin model [Lin et al., Phys. Rev. B 89,
220405(R) (2014)]. Several experimental observations can be well reproduced by
the Monte Carlo simulations of the modified spin models. Our work suggests that
the disorder induced by V/Al doping cooperated with the frustration in the
system may contribute to the emergence of the spin glass state. Furthermore,
the hole-doping by Mg2+ substituting Cr3+ enhances the quantum fluctuations and
bond disorder which modulate the biquadratic exchanges, and in turn results in
the promotion of the spiral phase, consistent with the experimental report.
