کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1522596 1511819 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of thermal annealing on resistance switching characteristics of Pt/ZrO2/TiN stacks
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Effect of thermal annealing on resistance switching characteristics of Pt/ZrO2/TiN stacks
چکیده انگلیسی
In this study, the effect of thermal annealing on both the physical properties and the resistive switching properties of ZrO2 films deposited by atomic layer deposition (ALD) method were investigated for its potential application to non-volatile memory devices. The ZrO2 films in the Pt/ZrO2/TiN structure exhibited unipolar and bipolar resistance switching behaviors depending on the nature of the bias applied to Pt top electrodes for the electro-forming process. For unipolar switching, the resistance of the high resistance state (HRS) was reduced with increasing annealing temperature, accompanied with the increase of metallic Zr in the annealed ZrO2 films. In contrast, the HRS resistance in the bipolar switching was increased while the low resistance state (LRS) resistance was decreased with increasing annealing temperature, producing a greater change in resistance. SIMS and EDX showed that the thickness of interfacial TiOxNy layer between the ZrO2 and the TiN bottom electrode was enlarged with annealing. The enlarged TiOxNy layer was expected to produce the reduction of LRS resistance with the increase of HRS resistance in the bipolar resistance switching.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 142, Issues 2–3, 15 November 2013, Pages 608-613
نویسندگان
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