Crystals, Volume 11, Issue 1 (January 2021) – 77 articles
Cover Story (view full-size image): Zinc iodate, Zn(IO3)2 has been studied under compression up to 17 GPa by means of synchrotron infrared microspectroscopy measurements. This is the first time this metal iodate is being studied via high-pressure Fourier Transform Infrared microspectroscopy. The experiments allowed the detection of twenty-five phonons below 600 cm−1 for the initial monoclinic low-pressure polymorph of Zn(IO3)2. The pressure response of the modes has been characterized, with several modes exhibiting non-linear responses. The non-linear behavior of modes and the detection of frequency discontinuities have been related to the possible existence of pressure-driven phase transitions. A meticulous analysis of the high-pressure spectra indicates that Zn(IO3)2 undergoes subtle phase transitions around 3 and 8 GPa, which are followed by a more drastic transition around 13 GPa. View t
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