NDLI: Cr$_{x}$Sb$_{2}$Te$_{1}$ materials for phase change memory with high speed and good thermal stability performance

Content Provider	Springer Nature Link
Author	Wang, Qing Liu, Bo Xia, Yangyang Zhang, Zhonghua Ji, Xinglong Song, Sannian Song, Zhitang Xi, Wei Yao, Dongning Lv, Shilong Feng, Songlin
Copyright Year	2015
Abstract	Phase change memory (PCM) is one of the most promising candidates for the next-generation non-volatile memory, of which phase change material as the storage media is the key factor. In this paper, we proposed a novel phase change material Cr$_{x}$Sb$_{2}$Te$_{1}$, which exhibits faster phase transition speed, better thermal stability and higher reliability compared with traditional Ge$_{2}$Sb$_{2}$Te$_{5}$. With the increase of doped-Cr, the grain sizes are refined and the volume change rate decreases. What’s more, in the composition range studied, the crystal structure of Cr$_{x}$Sb$_{2}$Te$_{1}$ films is single hexagonal phase without phase separation. For preferred Cr$_{0.25}$Sb$_{2}$Te$_{1}$ and Cr$_{0.41}$Sb$_{2}$Te$_{1}$ films, the resistance ratios between amorphous and crystalline states are up to two orders of magnitude or more; the temperatures for 10-year-data-rentation are 102.7 and 128.4 °C, respectively, showing good thermal stability performance. For the PCM cells based on the preferred Cr$_{0.25}$Sb$_{2}$Te$_{1}$ and Cr$_{0.41}$Sb$_{2}$Te$_{1}$ films, the threshold current/threshold voltage are about 4 μA/1.3 V and 4 μA/1.2 V, respectively; and when the voltage pulse width is short as 30 ns, the SET/RESET voltages are 1.7/3.3 and 1.9/4.5 V, respectively, showing high speed application potential for PCM.
Starting Page	4138
Ending Page	4143
Page Count	6
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	26
Issue Number	6
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2015-04-03
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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