Phase transition of Zn2SnO4 nanowires under high pressure

Abstract

In situ high-pressure angle dispersive x-ray diffraction experiments using synchrotron radiation on inverse spinel structure Zn2SnO4 nanowires were carried out with a diamond anvil cell at room temperature. The crystal symmetry becomes lower at around 12.9 GPa and an intermediate phase with an orthorhombic structure occurs. At about 32.7 GPa, a phase transition occurs accompanying a high-pressure phase. In situ Raman scattering investigation was also performed to explore the phase transition. In the pressure range 15.5–32.8 GPa, the intermediate phase is also detected and a high-pressure phase is observed above 32.8 GPa. The high-pressure phase is considered to possess the ambient pressure structure of CaFe2O4.

Comparative study on structural, morphological and optical properties of Zn2SnO4 thin films prepared by r.f. sputtering using Zn and Sn metal targets and ZnO–SnO2 ceramic target

“…On the one hand, the pseudo-Voigt deconvolution also reported in Figure 4 shows that the broad band at 560 cm -1 arises from the superimposition of three different contributions at 505, 555 and 666 cm -1 , associated to the B 1u mode of SnO 2 [18] and to the F 2g (3) and A 1g modes of spinel-type Zn 2 SnO 4 [19], respectively. On the other hand, the signal at 330 cm -1 is associated to the E 2 (high)-E 2 (low) mode of ZnO [20], as also pointed out in Figure 4.…”

Highly porous Zinc Stannate (Zn2SnO4) nanofibers scaffold photoelectrodes for efficient methyl ammonium halide perovskite solar cells

“…In order to further confirmation, we have recorded micro-Raman spectrum of Zn 2 SnO 4 -700 sample (Figure 3). The strong Raman shift peaks at 669.1(A1g), 530.2(F2g)and 435.85(Eg) cm −1 corresponding to well-known Zn 2 SnO 4 peaks252829. No additional secondary phase of ZnO is observed.…”

Anomalous Structural Transition and Electrical Transport Behaviors in Compressed Zn2SnO4: Effect of Interface

“…High pressure studies on ZTO nanowires showed that cubic ZTO transformed into an intermediate orthorhombic phase at 12.9 GPa and then to a new high-pressure orthorhombic structure at approximately 32.7 GPa. The structure of the high-pressure phase is similar to the ambient-pressure CaFe 2 O 4 (ferrite-type) structure14. In sharp contrast, theoretical simulations show that at above 39.0 GPa, ZTO transforms into another new orthorhombic structure that is similar to that of titanite-type CaTi 2 O 4 15.…”