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Ti-electrode effects of NiO based resistive switching memory with Ni insertion layer
被引:25
|作者:
Ryu, Seung Wook
[1
]
Ahn, Young Bae
[2
,3
]
Kim, Hyeong Joon
[2
,3
]
Nishi, Yoshio
[1
]
机构:
[1] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
[2] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea
[3] Seoul Natl Univ, Interuniv Semicond Res Ctr, Seoul 151744, South Korea
关键词:
D O I:
10.1063/1.3697691
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
Effects of Ti top electrode on unipolar resistive switching characteristics are investigated for NiO based resistive switching memory with Ni-inserting layer, compared with those for Pt-electrode. Current-voltage curves for forming process are almost identical for Ti-Ni-NiO-Pt and Pt-Ni-NiO-Pt structure, which may suggest that Ti does not chemically react with NiO. However, I-V curves for reset and set operation with Ti top electrode show improved resistive switching behaviors, such as reduction of reset current and less variation of both high and low resistance states. In order to understand the mechanism for improved resistive switching properties, electro-thermal simulation is performed, which shows that improvement in resistive switching characteristics is ascribed to reduced heat flow through top electrode resulting from lower thermal conductivity of Ti as compared to Pt. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3697691]
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