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- W3201146295 abstract "Germanium-rich GeSbTe alloys have recently emerged as promising materials for embedded phase change memories of interest for applications in the automotive sector thanks to the high crystallization temperature of their amorphous phase. Crystallization of Ge-rich GeSbTe alloys can lead to phase separation with segregation of crystalline Ge. The inhomogeneity of the resulting system brings, however, some drawbacks such as the drift of the electrical resistance with time of the crystalline phase. To mitigate these effects, a better understanding of the decomposition process is needed. In this work, we performed density functional calculations on possible decomposition pathways of the ${mathrm{Ge}}_{5}{mathrm{Sb}}_{2}{mathrm{Te}}_{3}$ alloy as an example of Ge-rich GeSbTe alloy on the Ge-${mathrm{Sb}}_{2}{mathrm{Te}}_{3}$ pseudobinary line. The energetics of the transformation into crystalline Ge and a less Ge-rich alloy is investigated as well as the structural, electronic, and vibrational properties of some possible decomposition products such as ${mathrm{Ge}}_{3}{mathrm{Sb}}_{2}{mathrm{Te}}_{3}$ or ${mathrm{Ge}}_{2}{mathrm{Sb}}_{2}{mathrm{Te}}_{1}$, among several others, in both the crystalline and amorphous phases." @default.
- W3201146295 created "2021-09-27" @default.
- W3201146295 creator A5053628907 @default.
- W3201146295 creator A5062132179 @default.
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- W3201146295 date "2021-09-15" @default.
- W3201146295 modified "2023-10-09" @default.
- W3201146295 title "Density functional simulations of decomposition pathways of Ge-rich GeSbTe alloys for phase change memories" @default.
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- W3201146295 doi "https://doi.org/10.1103/physrevmaterials.5.095004" @default.
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