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Author Trapatseli, Maria ♦ Khiat, Ali ♦ Cortese, Simone ♦ Serb, Alexantrou ♦ Carta, Daniela ♦ Prodromakis, Themistoklis
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ALUMINIUM ♦ ATOMIC FORCE MICROSCOPY ♦ COMPARATIVE EVALUATIONS ♦ CRYSTALS ♦ DAMAGE ♦ DOPED MATERIALS ♦ ELECTRIC POTENTIAL ♦ ELECTRODEPOSITION ♦ EQUIPMENT ♦ FAILURES ♦ PULSES ♦ THIN FILMS ♦ TITANIUM OXIDES
Abstract Titanium oxide (TiO{sub x}) has attracted a lot of attention as an active material for resistive random access memory (RRAM), due to its versatility and variety of possible crystal phases. Although existing RRAM materials have demonstrated impressive characteristics, like ultra-fast switching and high cycling endurance, this technology still encounters challenges like low yields, large variability of switching characteristics, and ultimately device failure. Electroforming has been often considered responsible for introducing irreversible damage to devices, with high switching voltages contributing to device degradation. In this paper, we have employed Al doping for tuning the resistive switching characteristics of titanium oxide RRAM. The resistive switching threshold voltages of undoped and Al-doped TiO{sub x} thin films were first assessed by conductive atomic force microscopy. The thin films were then transferred in RRAM devices and tested with voltage pulse sweeping, demonstrating that the Al-doped devices could on average form at lower potentials compared to the undoped ones and could support both analog and binary switching at potentials as low as 0.9 V. This work demonstrates a potential pathway for implementing low-power RRAM systems.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-07-14
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 120
Issue Number 2


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