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Phase Transformation of Metastable ZnSnO 3 Upon Thermal Decomposition by In‐Situ Temperature‐Dependent Raman Spectroscopy
Author(s) -
Bora Tanujjal,
AlHinai Muna H.,
AlHinai Ashraf T.,
Dutta Joydeep
Publication year - 2015
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13791
Subject(s) - raman spectroscopy , spinel , materials science , annealing (glass) , analytical chemistry (journal) , fourier transform infrared spectroscopy , spectroscopy , zinc , in situ , phase (matter) , crystallography , chemical engineering , chemistry , optics , metallurgy , physics , organic chemistry , chromatography , quantum mechanics , engineering
Temperature‐dependent in‐situ Raman spectroscopy is used to investigate the phase transformation of zinc metastannate (ZnSnO 3 ) to zinc orthostannate (Zn 2 SnO 4 ) induced upon annealing in the ambient. ZnSnO 3 microcubes ( MC s) were synthesized at room temperature using a simple aqueous synthesis process, followed by characterization using electron microscopy, X‐ray diffraction ( XRD ), Fourier transform infrared ( FTIR ) spectroscopy, and thermogravimetric analysis ( TGA ). Annealing of the ZnSnO 3 MC s was carried out up to 1000°C, while recording the Raman spectra in‐situ at regular intervals. Phase transformation from metastannate to orthostannate was found to begin around 500°C with an activation energy of ~0.965 eV followed by the recrystallization into the inverse spinel orthostannate phase at ~750°C. Results from this study provide detailed understanding of the phase transformation behavior of perovskite ZnSnO 3 to inverse spinel Zn 2 SnO 4 upon thermal annealing.