A Multi-Scale Approach to Sodium-Based Battery Development
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Powder Diffraction
The monoclinic-to-tetragonal phase transition (∼70 °C) in vanadium dioxide (VO2) strongly impacts the infrared properties, which enables its use in applications such as smart window devices. Synthesis of VO 2 can be challenging due to the variability of vanadium oxide phases that may be formed. We have employed high-temperature X-ray diffraction (HTXRD) to monitor the reaction process of vanadium oxide precursor powders to form the desired tetragonal VO2 phase. Single-phase tetragonal VO2 was formed within 30 min at 420 °C in flowing N2 gas (∼50 ppm O2). The monoclinic-to-tetragonal phase transformation was observed via HTXRD at ∼70 °C with the typical ∼10 °C hysteresis (i.e. approached from above or below the transition). © International Centre for Diffraction Data 2014.
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Journal of Materials Chemistry
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Proposed for publication in Applied Physics Letters.
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Journal of Materials Research
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Applied Physics Letters
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IEEE Transactions on Applied Superconductivity
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