Spin echo studies of heavily cobalt-doped ZnO:Mn2+: Electron spectral diffusion under dynamic nuclear polarizationRemoveD. V. Azamat, L. Jastrabik, M. Fanciulli, A. Dejneka, D. R. Yakovlev, and M. BayerPhys. Rev. B 112, 214421 (2025)