| Autor: |
Uwe Schroeder, Ekaterina Yurchuk, Johannes Müller, Dominik Martin, Tony Schenk, Patrick Polakowski, Christoph Adelmann, Mihaela I. Popovici, Sergei V. Kalinin, Thomas Mikolajick |
| Zdroj: |
Japanese Journal of Applied Physics; Aug2014, Vol. 53 Issue 8S1, p1-1, 1p |
| Abstrakt: |
The wake-up behavior of ferroelectric thin film capacitors based on doped hafnium oxide dielectrics in TiN-based metal–insulator–metal structures is reported. After field cycling a remanent polarization up to 40 µC/cm2 and a high coercive field of about 1 MV/cm was observed. Doping of HfO2 by different dopants with a crystal radius ranging from 54 pm (Si) to 132 pm (Sr) was evaluated. In all cases, an improved polarization–voltage hysteresis after wake-up cycling is visible. For smaller dopant atoms like Si and Al stronger pinching of the polarization hysteresis appeared with increasing dopant concentration and proved to be stable during cycling. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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