کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5351524 1503671 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Current hysteresis by oxygen vacancy exchange between oxides in Pt/a-IGZO/TaOx/W
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Current hysteresis by oxygen vacancy exchange between oxides in Pt/a-IGZO/TaOx/W
چکیده انگلیسی
ReRAM (resistance random access memory) has been receiving attention as the next-generation memory owing to advantages such as fast switching-speed, low power consumption, and simple structure. However, in order to improve the properties of the candidate materials that show resistive switching phenomenon, it is essential to understand the resistive switching mechanism. This study was conducted to investigate the switching mechanism of a ReRAM device with Pt/a-IGZO (amorphous In-Ga-Zn-O)/TaOx/Al2O3/W structure that exhibits useful properties such as forming free and self-rectifying properties in addition to the general memory properties of existing ReRAM devices. Based on a series of designed experiments and analysis, it was found that the current hysteresis in this device is based on the oxygen vacancy exchange between a-IGZO and TaOx. The movement of positively charged oxygen vacancy according to the relative polarity of applied voltage between the two oxides induces the resistance change of TaOx layer, which in turn results in the resistive switching.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 293, 28 February 2014, Pages 220-224
نویسندگان
, , , , ,