Materials id 2245 / Si3N4 / P31c (159)
==============================================================================

- Date page updated: 2018-4-17
- Space group type: P31c (159) / P 3 -2c
- Number of formula units (Z): 4
- Phonon raw data: :download:`mp-2245-20180417.tar.lzma <./mp-2245-20180417.tar.lzma>`
- Link to Materials Project: `https://www.materialsproject.org/materials/mp-2245/ <https://www.materialsproject.org/materials/mp-2245/>`_

Phonon band structure
----------------------

.. image:: mp-2245-band.png

Phonon DOS
-----------

.. image:: mp-2245-dos.png

Thermal properties at constant volume
--------------------------------------

Imaginary modes are excluded if they exist.

.. image:: mp-2245-tprops.png

POSCAR.yaml
----------------

POSCAR.yaml shows the crystal structure after the relaxation used for this phonon calculation.

::

   lattice:
   - [     7.7735735000000004,     0.0000000000000000,     0.0000000000000000 ] # a
   - [    -3.8867867500000002,     6.7321121300000000,     0.0000000000000000 ] # b
   - [     0.0000000000000000,     0.0000000000000000,     5.6347270399999996 ] # c
   points:
   - symbol: N  # 1
     coordinates: [  0.6105227700000000,  0.9547569500000000,  0.4331135600000000 ]
     mass: 14.006700
   - symbol: N  # 2
     coordinates: [  0.0452430500000000,  0.6557658200000001,  0.4331135600000000 ]
     mass: 14.006700
   - symbol: N  # 3
     coordinates: [  0.3442341800000000,  0.3894772300000000,  0.4331135600000000 ]
     mass: 14.006700
   - symbol: N  # 4
     coordinates: [  0.9547569500000000,  0.6105227700000000,  0.9331135600000000 ]
     mass: 14.006700
   - symbol: N  # 5
     coordinates: [  0.6557658200000001,  0.0452430500000000,  0.9331135600000000 ]
     mass: 14.006700
   - symbol: N  # 6
     coordinates: [  0.3894772300000000,  0.3442341800000000,  0.9331135600000000 ]
     mass: 14.006700
   - symbol: N  # 7
     coordinates: [  0.3190821600000000,  0.0040133400000000,  0.6992852100000000 ]
     mass: 14.006700
   - symbol: N  # 8
     coordinates: [  0.9959866600000000,  0.3150688200000000,  0.6992852100000000 ]
     mass: 14.006700
   - symbol: N  # 9
     coordinates: [  0.6849311800000000,  0.6809178400000000,  0.6992852100000000 ]
     mass: 14.006700
   - symbol: N  # 10
     coordinates: [  0.0040133400000000,  0.3190821600000000,  0.1992852100000000 ]
     mass: 14.006700
   - symbol: N  # 11
     coordinates: [  0.3150688200000000,  0.9959866600000000,  0.1992852100000000 ]
     mass: 14.006700
   - symbol: N  # 12
     coordinates: [  0.6809178400000000,  0.6849311800000000,  0.1992852100000000 ]
     mass: 14.006700
   - symbol: N  # 13
     coordinates: [  0.6666666700000000,  0.3333333300000000,  0.6040058400000000 ]
     mass: 14.006700
   - symbol: N  # 14
     coordinates: [  0.3333333300000000,  0.6666666700000000,  0.1040058400000000 ]
     mass: 14.006700
   - symbol: N  # 15
     coordinates: [  0.0000000000000000,  0.0000000000000000,  0.4538082000000000 ]
     mass: 14.006700
   - symbol: N  # 16
     coordinates: [  0.0000000000000000,  0.0000000000000000,  0.9538082000000000 ]
     mass: 14.006700
   - symbol: Si # 17
     coordinates: [  0.5117097100000000,  0.4292406200000000,  0.6603678600000000 ]
     mass: 28.085500
   - symbol: Si # 18
     coordinates: [  0.5707593800000000,  0.0824691000000000,  0.6603678600000000 ]
     mass: 28.085500
   - symbol: Si # 19
     coordinates: [  0.9175309000000000,  0.4882902900000000,  0.6603678600000000 ]
     mass: 28.085500
   - symbol: Si # 20
     coordinates: [  0.4292406200000000,  0.5117097100000000,  0.1603678600000000 ]
     mass: 28.085500
   - symbol: Si # 21
     coordinates: [  0.0824691000000000,  0.5707593800000000,  0.1603678600000000 ]
     mass: 28.085500
   - symbol: Si # 22
     coordinates: [  0.4882902900000000,  0.9175309000000000,  0.1603678600000000 ]
     mass: 28.085500
   - symbol: Si # 23
     coordinates: [  0.1675129200000000,  0.9140842300000001,  0.4529953600000000 ]
     mass: 28.085500
   - symbol: Si # 24
     coordinates: [  0.0859157700000000,  0.2534286900000000,  0.4529953600000000 ]
     mass: 28.085500
   - symbol: Si # 25
     coordinates: [  0.7465713100000000,  0.8324870800000000,  0.4529953600000000 ]
     mass: 28.085500
   - symbol: Si # 26
     coordinates: [  0.9140842300000001,  0.1675129200000000,  0.9529953600000000 ]
     mass: 28.085500
   - symbol: Si # 27
     coordinates: [  0.2534286900000000,  0.0859157700000000,  0.9529953600000000 ]
     mass: 28.085500
   - symbol: Si # 28
     coordinates: [  0.8324870800000000,  0.7465713100000000,  0.9529953600000000 ]
     mass: 28.085500
   poscar_order:
   - 1
   - 2
   - 3
   - 4
   - 5
   - 6
   - 7
   - 8
   - 9
   - 10
   - 11
   - 12
   - 13
   - 14
   - 15
   - 16
   - 17
   - 18
   - 19
   - 20
   - 21
   - 22
   - 23
   - 24
   - 25
   - 26
   - 27
   - 28

Citation
-----------

.. _the Materials Project: https://www.materialsproject.org/
.. _the Materials Project citation: https://materialsproject.org/citing
.. _SeeK-path: http://materialscloud.org/tools/seekpath

..

The initial crystal structure used to perform phonon calculation is
obtained from `the Materials Project`_. The phonon band structure
paths are determined using `SeeK-path`_. More details about how to
obtain the crystal structure, how to determine the band structure
paths, and those citations are found at
:ref:`crystal_structure_and_citation`.

License
--------------

The contents of this web page are licensed under a `Creative Commons
4.0 Attribution International License
<http://creativecommons.org/licenses/by/4.0/>`_.

.. image :: https://i.creativecommons.org/l/by/4.0/88x31.png
   :target: http://creativecommons.org/licenses/by/4.0/
   :alt: license