Evidence for oxygen vacancies movement during wake-up in ferroelectric hafnium oxide
| Autor: | S. Starschich, Stephan Menzel, Ulrich Böttger |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Valence (chemistry) Materials science Physics and Astronomy (miscellaneous) Doping Inorganic chemistry fungi chemistry.chemical_element food and beverages 02 engineering and technology Yttrium 021001 nanoscience & nanotechnology 01 natural sciences Oxygen Ferroelectricity Ion chemistry Chemical physics 0103 physical sciences Electrode Redistribution (chemistry) ddc:530 0210 nano-technology |
| Zdroj: | Applied physics letters 108(3), 032903-(2016). doi:10.1063/1.4940370 |
| Popis: | The wake-up effect which is observed in ferroelectric hafnium oxide is investigated in yttrium doped hafnium oxide prepared by chemical solution deposition. It can be shown that not the amount of cycles but the duration of the applied electrical field is essential for the wake-up. Temperature dependent wake-up cycling in a range of −160 °C to 100 °C reveals a strong temperature activation of the wake-up, which can be attributed to ion rearrangement during cycling. By using asymmetrical electrodes, resistive valence change mechanism switching can be observed coincident with ferroelectric switching. From the given results, it can be concluded that redistribution of oxygen vacancies is the origin of the wake-up effect. |
| Databáze: | OpenAIRE |
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