Abstract
The dynamic oscillation in the current-time characteristics of Ge2 Sb2 Te5 and Sb-doped Ge2 Sb2 Te5 thin-film materials was investigated using a scanning electrical nanoprobe. The dynamic oscillation was attributed to the threshold switching of the amorphous-phase Ge2 Sb2 Te5 and doped Ge2 Sb2 Te5 thin films. The microscopic mechanism of the threshold switching behavior was also studied. X-ray diffraction showed that the excess Sb improved the crystallization of Ge2 Sb2 Te5 during postannealing at 300°C. Sb-doping also increased the threshold switching speed.
Original language | English |
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Pages (from-to) | 281-283 |
Number of pages | 3 |
Journal | Electrochemical and Solid-State Letters |
Volume | 10 |
Issue number | 9 |
DOIs | |
State | Published - 1 Jan 2007 |