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Article Dans Une Revue Journal of Applied Physics Année : 2019

Strain-induced resistance change in V 2 O 3 films on piezoelectric ceramic disks

Résumé

We prepared a stacked structure consisting of a quasi-free-standing functional oxide thin film and a ceramic piezoelectric disk and observed the effect of the piezoelectric disk deformation on the resistance of the thin film. Epitaxial V2O3 films were grown by a pulsed laser deposition method on muscovite mica substrates, peeled off using Scotch tapes, and transferred onto piezoelectric elements. In this V2O3/insulator/top electrode/piezoelectronic disk/bottom electrode structure, the resistance of the V2O3 film displayed a variation of 60% by sweeping the piezoelectronic disk bias. With support from x-ray diffraction measurements under an electric field, a huge gauge factor of 3 × 103 in the V2O3 film was inferred. The sizeable resistance change in the V2O3 layer is ascribed to the piezo-actuated evolution of c/a ratios, which drives the material towards an insulating phase. A memory effect on the resistance, related to the hysteretic displacement of the piezoelectric material, is also presented.
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Dates et versions

hal-02109266 , version 1 (11-02-2022)

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Joe Sakai, Maxime Bavencoffe, Béatrice Negulescu, Patrice Limelette, Jérôme Wolfman, et al.. Strain-induced resistance change in V 2 O 3 films on piezoelectric ceramic disks. Journal of Applied Physics, 2019, 125 (11), pp.115102. ⟨10.1063/1.5083941⟩. ⟨hal-02109266⟩
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