Journal
APPLIED SURFACE SCIENCE
Volume 573, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2021.151514
Keywords
Phase-Change Memory; Oxide-film growth kinetics; X-ray photoelectron spectroscopy (XPS); Transmission electron microscopy (TEM); Modeling
Categories
Funding
- European commission [783176]
- French government
- Auvergne-Rhone Alpes Region
- French RENATECH network
- French Government program Investissements d'Avenir [ANR-10-EQPX-33]
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Phase-Change Memory technology is maturing and attracting interest for future non-volatile memory applications. A protocol using pARXPS technique was developed to measure oxidation thickness on Ge-rich GST alloys, revealing a double oxidation kinetic and influence of nitrogen doping. Analysis was conducted using pARXPS and TEM-EDX techniques.
Phase-Change Memory technology is increasing in maturity and in interest for next generation of non-volatile memory applications. In order to take advantage of the properties of innovative phase-change layers such as Ge-rich GST alloys, the understanding of the phenomena behind the possible evolution of the layer in time and temperature becomes fundamental. In this work, we present in detail the protocol we have developed using pARXPS technique, to reliably measure the surficial oxidation thickness on Ge-rich GST alloys with different nitrogen doping level. A double oxidation kinetic was observed on these samples for the first time, as well as an influence by nitrogen doping, and analyzed in detail by complementarily using pARXPS and TEM-EDX techniques.
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