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- W1975277752 abstract "Homogeneous phase W–Ge–Te material has been proposed and investigated for phase-change memory (PCM) applications. The crystallization temperature of GeTe is markedly improved by introducing W atoms. In the W–Ge–Te material, W atoms bonding to Ge and Te atoms serve as substitutional impurities. During the crystallization process, the diffusion of Ge and Te atoms is restricted by W atoms that have larger atomic mass, which further leads to more uniform crystallization of the material. W atoms serve as nucleation centers and attract the surrounding Ge and Te atoms, quickly building crystal grains. W0.1(GeTe)0.9 film has a 10-year data retention temperature of 225 °C and an ultrafast crystallization time of 3 ns. Specifically, W0.1(GeTe)0.9 film can withstand the Pb-free solder reflow temperature (260 °C) for 4.6 × 104 s. A voltage pulse of as little of 10 ns long can realize reversible operations for W0.1(GeTe)0.9-based PCM devices. In addition, good endurance (5 × 105 cycles) has also been obtained for the cell." @default.
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- W1975277752 date "2014-08-01" @default.
- W1975277752 modified "2023-10-17" @default.
- W1975277752 title "Homogeneous phase W–Ge–Te material with improved overall phase-change properties for future nonvolatile memory" @default.
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- W1975277752 doi "https://doi.org/10.1016/j.actamat.2014.03.069" @default.
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