Popova M.; Klimin S.; Chukalina E.; Malkin B.; Levitin R.; Mill B.; Antic-Fidancev E.
(2003)
A family of linear chain nickelates (ErxY1-x) 2BaNiO5 (x = 1, 0.8, 0.6, 0.4, 0.2, and 0.1) was studied by high-resolution spectroscopy of the Er3+ ion. Energies of 38 crystal-field levels of Er3+ and exchange splittings ...