Temperature driven structural evolution of Ge-rich GeSbTe alloys and role of N-doping

Lucie Prazakova (1, 2) , Emmanuel Nolot (1, 2) , Eugénie Martinez (2) , Frederic Fillot (1, 2) , Denis Rouchon (1, 2) , Névine Rochat (1, 2) , Mathieu Bernard (2) , Chiara Sabbione (2) , Damien Morel (1, 2) , Nicolas Bernier (2) , Adeline Grenier (2) , Anne-Marie Papon (2) , Marie Claire Cyrille (2) , Gabriele Navarro (2)

1 DPFT - Département Plate-Forme Technologique
2 UGA - Université Grenoble Alpes

We present the investigation of the structure of undoped and N-doped Ge-rich GeSbTe alloys as a function of the annealing temperature. We highlight the stability of SbTe3 features of GeSbTe phase and the progressive rearrangement of Ge-Te units around these stable units. Moreover, we investigate the role of N-doping and the impact of formed Ge-N bonds on the overall crystallization mechanism in these Ge-rich GeSbTe alloys.

Mots clés: Phase-change material; Ge-rich GeSbTe alloys; N-doping; structure; crystallization

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Lucie Prazakova, Emmanuel Nolot, Eugénie Martinez, Frederic Fillot, Denis Rouchon, et al.. Temperature driven structural evolution of Ge-rich GeSbTe alloys and role of N-doping. E\PCOS 2021 - European Phase-Change and Ovonic Symposium, Sep 2021, Oxford (online), United Kingdom. ⟨cea-03616001⟩