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. 2016 Apr 1;6:23652. doi: 10.1038/srep23652

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Copyright © 2016, Macmillan Publishers Limited

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(a) Simulated LA-PACBED patterns for bulk NdNiO₃, and experimental LA-PACBED patterns for the NdGaO₃ substrate and the NdNiO₃ film on NdGaO₃ at room temperature. (b) LA-PACBED patterns from (a) after a Sorbel edge filter, with enhanced contrast to allow for identification of the diffraction discs. Selected diffraction discs are indexed in orthorhombic notation. The insets show the experimental 200 discs. The NdGaO₃ substrate shows very similar features and intensities as the simulation, while the NdNiO₃ film shows a different symmetry than the substrate and bulk structure. (c) Schematic of the expanded 2 × 2 × 2 pseudocubic unit cell for bulk NdNiO₃ and tensile strained NdNiO₃ films, showing relationships between key features in the orthorhombic lattice parameters and most probable Glazer octahedral tilts.