Citation: Alonso, J A; Rasines, I; Rodriguez-Carvajal, J; Torrance, J B (1994). Hole and electron doping of R~2~BaNiO~5~ (R=rare earths). Journal of Solid State Chemistry, 109, pp. 231-240.
Formula: Ba Ca0.22 Er1.78 Ni O5
Chemical name:Erbium calcium barium nickel oxide (1.8/0.2/1/1/5)