Materials id 9478 / BaSi4O9 / P-6c2 (188)
==============================================================================

- Date page updated: 2018-4-17
- Space group type: P-6c2 (188) / P -6c 2
- Number of formula units (Z): 2
- Phonon raw data: :download:`mp-9478-20180417.tar.lzma <./mp-9478-20180417.tar.lzma>`
- Link to Materials Project: `https://www.materialsproject.org/materials/mp-9478/ <https://www.materialsproject.org/materials/mp-9478/>`_

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

.. image:: mp-9478-band.png

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

.. image:: mp-9478-dos.png

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

Imaginary modes are excluded if they exist.

.. image:: mp-9478-tprops.png

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

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

::

   lattice:
   - [     6.5149468500000003,     0.0000000000000000,     0.0000000000000000 ] # a
   - [    -3.2574734300000001,     5.6421094800000002,     0.0000000000000000 ] # b
   - [     0.0000000000000000,     0.0000000000000000,     9.4241776599999998 ] # c
   points:
   - symbol: O  # 1
     coordinates: [  0.6607767000000000,  0.1046746900000000,  0.3934725000000000 ]
     mass: 15.999400
   - symbol: O  # 2
     coordinates: [  0.6607767000000000,  0.5561020000000000,  0.6065275000000000 ]
     mass: 15.999400
   - symbol: O  # 3
     coordinates: [  0.4438980000000000,  0.3392233000000000,  0.3934725000000000 ]
     mass: 15.999400
   - symbol: O  # 4
     coordinates: [  0.8953253100000000,  0.5561020000000000,  0.3934725000000000 ]
     mass: 15.999400
   - symbol: O  # 5
     coordinates: [  0.4438980000000000,  0.3392233000000000,  0.1065275000000000 ]
     mass: 15.999400
   - symbol: O  # 6
     coordinates: [  0.8953253100000000,  0.5561020000000000,  0.1065275000000000 ]
     mass: 15.999400
   - symbol: O  # 7
     coordinates: [  0.6607767000000000,  0.1046746900000000,  0.1065275000000000 ]
     mass: 15.999400
   - symbol: O  # 8
     coordinates: [  0.4438980000000000,  0.1046746900000000,  0.8934725000000000 ]
     mass: 15.999400
   - symbol: O  # 9
     coordinates: [  0.8953253100000000,  0.3392233000000000,  0.8934725000000000 ]
     mass: 15.999400
   - symbol: O  # 10
     coordinates: [  0.8953253100000000,  0.3392233000000000,  0.6065275000000000 ]
     mass: 15.999400
   - symbol: O  # 11
     coordinates: [  0.1888916300000000,  0.2662292700000000,  0.7500000000000000 ]
     mass: 15.999400
   - symbol: O  # 12
     coordinates: [  0.7337707300000000,  0.9226623500000000,  0.7500000000000000 ]
     mass: 15.999400
   - symbol: O  # 13
     coordinates: [  0.0773376500000000,  0.8111083700000000,  0.7500000000000000 ]
     mass: 15.999400
   - symbol: O  # 14
     coordinates: [  0.1888916300000000,  0.9226623500000000,  0.2500000000000000 ]
     mass: 15.999400
   - symbol: O  # 15
     coordinates: [  0.0773376500000000,  0.2662292700000000,  0.2500000000000000 ]
     mass: 15.999400
   - symbol: O  # 16
     coordinates: [  0.7337707300000000,  0.8111083700000000,  0.2500000000000000 ]
     mass: 15.999400
   - symbol: O  # 17
     coordinates: [  0.6607767000000000,  0.5561020000000000,  0.8934725000000000 ]
     mass: 15.999400
   - symbol: O  # 18
     coordinates: [  0.4438980000000000,  0.1046746900000000,  0.6065275000000000 ]
     mass: 15.999400
   - symbol: Si # 19
     coordinates: [  0.3014708400000000,  0.2126449600000000,  0.2500000000000000 ]
     mass: 28.085500
   - symbol: Si # 20
     coordinates: [  0.9111741200000000,  0.6985291600000000,  0.2500000000000000 ]
     mass: 28.085500
   - symbol: Si # 21
     coordinates: [  0.7873550400000000,  0.0888258800000000,  0.2500000000000000 ]
     mass: 28.085500
   - symbol: Si # 22
     coordinates: [  0.9111741200000000,  0.2126449600000000,  0.7500000000000000 ]
     mass: 28.085500
   - symbol: Si # 23
     coordinates: [  0.3014708400000000,  0.0888258800000000,  0.7500000000000000 ]
     mass: 28.085500
   - symbol: Si # 24
     coordinates: [  0.7873550400000000,  0.6985291600000000,  0.7500000000000000 ]
     mass: 28.085500
   - symbol: Si # 25
     coordinates: [  0.6666666700000000,  0.3333333300000000,  0.5000000000000000 ]
     mass: 28.085500
   - symbol: Si # 26
     coordinates: [  0.6666666700000000,  0.3333333300000000,  0.0000000000000000 ]
     mass: 28.085500
   - symbol: Ba # 27
     coordinates: [  0.3333333300000000,  0.6666666700000000,  0.5000000000000000 ]
     mass: 137.327000
   - symbol: Ba # 28
     coordinates: [  0.3333333300000000,  0.6666666700000000,  0.0000000000000000 ]
     mass: 137.327000
   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