V3O5: Insulator-metal transition and electric-field-induced resistive-switching

V3O5 is one of the two vanadium oxides that exhibit insulator to metal transitions above room temperature. We report on the DC I–V characteristics of polycrystalline samples and single-crystals of V3O5 over a wide range of currents. For all samples self-heating induced hysteretic nonlinear conductiv...

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Bibliographic Details
Published in:Applied physics letters 2016-09, Vol.109 (10)
Main Authors: Fisher, B., Patlagan, L., Chashka, K. B., Makarov, C., Reisner, G. M.
Format: Article
Language:English
Subjects:
Applied physics
Oxygen content
Polycrystals
Single crystals
Switching
Vanadium oxides
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Summary:V3O5 is one of the two vanadium oxides that exhibit insulator to metal transitions above room temperature. We report on the DC I–V characteristics of polycrystalline samples and single-crystals of V3O5 over a wide range of currents. For all samples self-heating induced hysteretic nonlinear conductivity followed at higher currents by onset of negative differential resistivity regime, and finally, at highest currents, by switching to the metallic state. Slow switching towards a partially transformed state with a prolonged memory is typical of polycrystalline samples. High currents applied in the metallic state of one of the single crystals affected the oxygen content of the material and even caused appearance and disappearance of a VO2 inclusion. Simple and reproducible I–V plots were obtained for a single crystal with the currents that barely induced the metallic state.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4962334