The role of Fe dopants in phase stability and electric switching properties of Fe-doped VO2
Source abstract
Abstract
Abstract The effect of Fe dopants on the metal-insulator transition of VO 2 is investigated by X-ray diffraction, Raman spectroscopy and thermal resistance measurements. The transition temperature is observed to decrease first, reach its minima (~60 °C) at ~1.5 at% Fe and then rise with increasing the doping concentration. The M 2 and T phases are determined to be stabilized by the Fe dopants. The stability regions of polymorphic phases of Fe-doped VO 2 are examined by Raman spectroscopy and X-ray diffraction. The solubility of Fe in VO 2 is determined to be ~4 at%. A phase diagram of Fe-doped VO 2 is constructed based on the experimental results. The resistance change of samples with the Fe content less than 1.5 at% remains to be ~4 orders of magnitude, demonstrating Fe-doped VO 2 a promising electric switching material.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Transition Metal Oxide Nanomaterials · Advanced Memory and Neural Computing · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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