Polymorphism in Ruddlesden-Popper $L{a}_{3}N{i}_2{O}_7$: Discovery of a Hidden Phase with Distinctive Layer Stacking

Xinglong Chen, Junjie Zhang, A. S. Thind +8

We report the discovery of a novel form of Ruddlesden-Popper (RP) oxide, which stands as the first example of long-range, coherent polymorphism in this class of inorganic solids. R…