Synchrotron X-ray absorption spectroscopy study of the local atomic structures and cation ordering in perovskite- and spinel-type zinc stannate synthesized by co-precipitation method

Synthesis of Orthorhombic Perovskite-Type ZnSnO3 Single-Crystal Nanoplates and Their Application in Energy Harvesting

“…(see “Phase Investigation on Zinc–Tin Composite Synthesized at 160 °C” in the Supporting Information). The main diffraction peaks in Figure b belong to the orthorhombic perovskite ZnSnO 3 phase, ,− but there are also some residual peaks belonging to the ZnSn­(OH) 6 phase (labeled by asterisks), indicating a partial transformation of the ZnSn­(OH) 6 phase into the ZnSnO 3 phase at the hydrothermal temperature of 180 °C. When the hydrothermal temperature reaches up to 260 °C, all of the diffraction peaks in Figure c are ascribed to the orthorhombic perovskite ZnSnO 3 phase, indicating that ZnSn­(OH) 6 is no longer present.…”

“…Although our results on ZnSnO 3 nanoplates show that they have excellent piezoelectric response, it is still quite elusive about the origin of the piezoelectric response at present. Orthorhombic-type ZnSnO 3 is supposed to have a space group Pnma . However, the centrosymmetric Pnma structure is nonpolar.…”

“…Orthorhombic-type ZnSnO 3 is supposed to have a space group Pnma. 34 However, the centrosymmetric Pnma structure is nonpolar. It is also reported that the electronics can drive ferroelectricity in orthorhombic perovskite materials with space group Pbmn (Pnma) when the ion sizes are small.…”