In-situ Raman scattering study of nitrogen doped GeTe phase-change films

Shuang Guo; Jinzhong Zhang; Yunfeng Wang

doi:10.1016/j.matlet.2023.133994

In-situ Raman scattering study of nitrogen doped GeTe phase-change films

Shuang Guo^*
, Jinzhong Zhang
, Yunfeng Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The N doping effect on the phase-change mechanism, as well as the chemical bonds evolution during crystallization process of nitrogen (N) doped GeTe (N_x(GeTe)_1-x) have been investigated by in situ temperature-dependent Raman scattering experiments. The phase-change mechanism of N_x(GeTe)_1-x and N doping effect have been discussed in detail by analysing the transformation of Raman vibration modes between amorphous and crystalline structures. The fraction of the tetrahedral species changes in such a way, namely Te-rich tetrahedra are being formed at the cost of Ge-rich tetrahedra during the phase-change process. Besides, the aforementioned structural rearrangements have taken place even in amorphous phase (below crystallization temperatures).

Original language	English
Article number	133994
Journal	Materials Letters
Volume	337
DOIs	https://doi.org/10.1016/j.matlet.2023.133994
State	Published - 15 Apr 2023
Externally published	Yes

Keywords

Chemical bonds evolution
Crystal structure
Nitrogen doped GeTe
Phase-change mechanism
Raman

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10.1016/j.matlet.2023.133994

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@article{092f3a8eded54f588b65295d4c067d6c,

title = "In-situ Raman scattering study of nitrogen doped GeTe phase-change films",

abstract = "The N doping effect on the phase-change mechanism, as well as the chemical bonds evolution during crystallization process of nitrogen (N) doped GeTe (Nx(GeTe)1-x) have been investigated by in situ temperature-dependent Raman scattering experiments. The phase-change mechanism of Nx(GeTe)1-x and N doping effect have been discussed in detail by analysing the transformation of Raman vibration modes between amorphous and crystalline structures. The fraction of the tetrahedral species changes in such a way, namely Te-rich tetrahedra are being formed at the cost of Ge-rich tetrahedra during the phase-change process. Besides, the aforementioned structural rearrangements have taken place even in amorphous phase (below crystallization temperatures).",

keywords = "Chemical bonds evolution, Crystal structure, Nitrogen doped GeTe, Phase-change mechanism, Raman",

author = "Shuang Guo and Jinzhong Zhang and Yunfeng Wang",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = apr,

day = "15",

doi = "10.1016/j.matlet.2023.133994",

language = "英语",

volume = "337",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - In-situ Raman scattering study of nitrogen doped GeTe phase-change films

AU - Guo, Shuang

AU - Zhang, Jinzhong

AU - Wang, Yunfeng

PY - 2023/4/15

Y1 - 2023/4/15

N2 - The N doping effect on the phase-change mechanism, as well as the chemical bonds evolution during crystallization process of nitrogen (N) doped GeTe (Nx(GeTe)1-x) have been investigated by in situ temperature-dependent Raman scattering experiments. The phase-change mechanism of Nx(GeTe)1-x and N doping effect have been discussed in detail by analysing the transformation of Raman vibration modes between amorphous and crystalline structures. The fraction of the tetrahedral species changes in such a way, namely Te-rich tetrahedra are being formed at the cost of Ge-rich tetrahedra during the phase-change process. Besides, the aforementioned structural rearrangements have taken place even in amorphous phase (below crystallization temperatures).

AB - The N doping effect on the phase-change mechanism, as well as the chemical bonds evolution during crystallization process of nitrogen (N) doped GeTe (Nx(GeTe)1-x) have been investigated by in situ temperature-dependent Raman scattering experiments. The phase-change mechanism of Nx(GeTe)1-x and N doping effect have been discussed in detail by analysing the transformation of Raman vibration modes between amorphous and crystalline structures. The fraction of the tetrahedral species changes in such a way, namely Te-rich tetrahedra are being formed at the cost of Ge-rich tetrahedra during the phase-change process. Besides, the aforementioned structural rearrangements have taken place even in amorphous phase (below crystallization temperatures).

KW - Chemical bonds evolution

KW - Crystal structure

KW - Nitrogen doped GeTe

KW - Phase-change mechanism

KW - Raman

UR - https://www.scopus.com/pages/publications/85147544754

U2 - 10.1016/j.matlet.2023.133994

DO - 10.1016/j.matlet.2023.133994

M3 - 文章

AN - SCOPUS:85147544754

SN - 0167-577X

VL - 337

JO - Materials Letters

JF - Materials Letters

M1 - 133994

ER -

In-situ Raman scattering study of nitrogen doped GeTe phase-change films

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Keywords

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