Spectroscopy of f-f transitions, crystal-field calculations, and magnetic and quadrupole helix chirality in DyFe${}_3$(BO${}_3$)${}_4$

M. N. Popova, E. P. Chukalina, K. N. Boldyrev +3

Recently, quadrupole helix chirality and its domain structure was observed in resonant x-ray diffraction experiments on DyFe${}_3$(BO${}_3$)${}_4$ using circularly polarized x rays [T. U…