Abstract
Multilevel resistive switching (RS) of gadolinium oxide (Gd xOy) memristors treated by hydrogen plasma immersion ion implantation (PIII) was investigated. Hydrogen ions were implanted at the Pt}/(GdxOy) interface to modify the oxygen-vacancy distribution, which was examined by the X-ray photoelectron spectroscopy. After the hydrogen PIII treatment, a forming process is needed to operate the (Gd xOy) memristors and the RS mechanism is changed from Schottky emission to space-charge-limited conduction. Superior multilevel RS properties such as data retention for more than 104 s at 85 ° C}, and sequentially cycling test for more than 103 times with a resistance ratio of approximately one order of magnitude between each state are realized, making the future high-density flash memory possible.
| Original language | English |
|---|---|
| Article number | 6748023 |
| Pages (from-to) | 452-454 |
| Number of pages | 3 |
| Journal | IEEE Electron Device Letters |
| Volume | 35 |
| Issue number | 4 |
| DOIs | |
| State | Published - 04 2014 |
Keywords
- Oxygen vacancy
- Plasma immersion ion implantation
- gadolinium oxide
- hydrogen
- memristor
- resistive switching