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Journal of Materials Science

Erschienen in:

06.02.2019 | Electronic materials

Direct measurement of “ready-made” cations in a Ge₂Sb_3.4Te_6.2 film

verfasst von: Yusuke Imanishi, Toshihiro Nakaoka

Erschienen in: Journal of Materials Science | Ausgabe 9/2019

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Abstract

We have successfully observed Faradaic current in cyclic voltammetry of an amorphous Ge₂Sb_3.4Te_6.2 film with Ag electrodes. The Faradaic current peak was attributed to a non-reversible redox process limited by diffusion of Ag cations. The Ag cations can be generated by anodic dissolution under applied bias voltage or may exist before the voltage application as “ready-made” ions. The cyclic voltammetry demonstrated the existence of ready-made Ag cations. The concentration of the ready-made cations was 0.008 mol/cm³, which was about one-tenth of the cations formed by a voltage sweep at 3.6 V/s, and was about one-hundredth of those formed at 0.3 V/s.

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Titel: Direct measurement of “ready-made” cations in a Ge2Sb3.4Te6.2 film
verfasst von: Yusuke Imanishi
Toshihiro Nakaoka
Publikationsdatum: 06.02.2019
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 9/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-019-03405-y

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