Using detailed Raman scattering analyses, the effect of tin (Sn) incorporation on the crystal structure, chemical bonding/inhomogeneity, and single-phase versus multiphase formation of gallium oxide (GaO) compounds is reported. The Raman characterization of the Sn-mixed GaO polycrystalline compounds (0.00 ≤ ≤ 0.30), which were produced by the high-temperature solid-state synthesis method, indicated that the Sn-induced changes in the chemical bonding and phase segregation were significant. Furthermore, the evolution of Sn-O bonds with increasing Sn concentration () was confirmed. While the monoclinic β-GaO was unperturbed for lower values, Raman spectra revealed the nucleation of a composite with a distinct SnO secondary phase. A higher Sn content led to the formation of a Ga-Sn-O + SnO mixed phase compound, which was reflected in shifts in the high-frequency stretching and bending of the GaO tetrahedra that structurally formed the β-GaO phase. Thus, a chemical composition/phase/chemical bonding correlation was established for the Sn-incorporated GaO compounds.
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| http://dx.doi.org/10.1021/acsomega.2c05047 | DOI Listing |
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