Topotactic transformation of single crystals: From perovskite to infinite-layer nickelates.

ABSTRACT: Topotactic transformations between related crystal structures are a powerful emerging route for the synthesis of novel quantum materials. Whereas most such “soft chemistry” experiments have been carried out on polycrystalline powders or thin films, the topotactic modification of single crystals, the gold standard for physical property measurements on quantum materials, has been studied only sparsely. Here, we report the topotactic reduction of La_1−xCa_xNiO₃ single crystals to La_1−xCa_xNiO_2+δ using CaH₂ as the reducing agent. The transformation from the three-dimensional perovskite to the quasi–two-dimensional infinite-layer phase was thoroughly characterized by x-ray diffraction, electron

SUBMITTER: Puphal P 

PROVIDER: S-EPMC8641924 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature