• Acta Physica Sinica
  • Vol. 69, Issue 6, 067101-1 (2020)
Xu-Han Shi, Hai-Yan Li, Zhen Yao*, and Bing-Bing Liu*
Author Affiliations
  • State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
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    DOI: 10.7498/aps.69.20191808 Cite this Article
    Xu-Han Shi, Hai-Yan Li, Zhen Yao, Bing-Bing Liu. First-principles study of Ca5N4 at high pressure [J]. Acta Physica Sinica, 2020, 69(6): 067101-1 Copy Citation Text show less
    Stable phases on the convex hulls of Ca-N system at 100 GPa.
    Fig. 1. Stable phases on the convex hulls of Ca-N system at 100 GPa.
    Crystalline structure of the predicted stable Ca5N4: (a) P 21/c phase at 100 GPa; (b), (c) he polyhedron units of Ca5N4.
    Fig. 2. Crystalline structure of the predicted stable Ca5N4: (a) P 21/c phase at 100 GPa; (b), (c) he polyhedron units of Ca5N4.
    Phonon dispersion curves of P 21/c phase at 100 GPa
    Fig. 3. Phonon dispersion curves of P 21/c phase at 100 GPa
    Cross-sections of electron local function of P 21/c-Ca5N4 at 100 GPa.
    Fig. 4. Cross-sections of electron local function of P 21/c-Ca5N4 at 100 GPa.
    Band structure and projected density of states of P 21/c-Ca5N4 at 100 GPa, respectively.
    Fig. 5. Band structure and projected density of states of P 21/c-Ca5N4 at 100 GPa, respectively.
    Raman spectrum of P 21/c-Ca5N4 at 100 GPa.
    Fig. 6. Raman spectrum of P 21/c-Ca5N4 at 100 GPa.
    The X-ray diffraction spectrum of P 21/c-Ca5N4 at 100 GPa.
    Fig. 7. The X-ray diffraction spectrum of P 21/c-Ca5N4 at 100 GPa.
    Xu-Han Shi, Hai-Yan Li, Zhen Yao, Bing-Bing Liu. First-principles study of Ca5N4 at high pressure [J]. Acta Physica Sinica, 2020, 69(6): 067101-1
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