Abstract
Single-phase MnZnO3 films were prepared on glass substrates coated with the use of indium tin oxide (ITO) as transparent bottom electrode via the sol–gel method. The effects of annealing temperature on structure, resistance switching behaviour and endurance characteristics of the ZnMnO3 films were investigated. The stable resistive switching behaviour with high resistance ratio in Ag/ZnMnO3/ITO unsymmetrical structure was observed. No second phase is detected, and the crystallinity of the MnZnO3 films is improved with the increase in annealing temperature from 350 to 400∘C. The MnZnO3 films annealed at 350–450∘C with an Ag/MnZnO3/ITO structure exhibit bipolar resistive switching behaviour. Ohmic and space-charge-limited conductions are the dominant mechanisms at low and high resistance states, respectively. V ON, VOFF and RHRS/RLRS of the MnZnO3 films increase with the increase in annealing temperature. Improved endurance characteristics are observed in the samples annealed at 350 and 400∘C. The endurance of the MnZnO3 films degrades when annealed at >450∘C.
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Acknowledgement
This research was jointly sponsored by Natural Science Foundation of China (Grant no. 61066001) and Guangxi Key Laboratory of Information Materials (Guilin University of Electronic Technology), China (Project no. 1110908-10-Z).
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WANG, H., GAO, SM., XU, JW. et al. Synthesis and resistive switching behaviour of ZnMnO3 thin films with an Ag/ZnMnO3/ITO unsymmetrical structure. Bull Mater Sci 38, 105–109 (2015). https://doi.org/10.1007/s12034-014-0792-9
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DOI: https://doi.org/10.1007/s12034-014-0792-9