Journal of Solid State Chemistry, volume 183, issue 5, pages 994-999

Potential existence of post-perovskite nitrides; DFT studies of ThTaN3

Publication typeJournal Article
Publication date2010-05-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.3
ISSN00224596, 1095726X
Materials Chemistry
Ceramics and Composites
Electronic, Optical and Magnetic Materials
Inorganic Chemistry
Physical and Theoretical Chemistry
Condensed Matter Physics
Abstract
Within density functional theory, the equations of state for cubic perovskite (c- pv ) and hypothetic orthorhombic perovskite (o- pv GdFeO3-type) and post-perovskite ( ppv ) forms of ThTaN3 are obtained. The decreasing volume and stabilizing energy indicate pressure enabled transitions: c- pv →o- pv → ppv . From electronic structure analysis the chemical system is found insulating in the c- pv ground state form with ∼ 1 eV band gap and semi-conducting for the ppv due to increased covalence. The chemical bonding properties show that Th and Ta bondings with the 2 N sites are selectively differentiated and reinforced for Ta–N bond within ppv form. This is the consequence of the corner as well as edge sharing octahedra characterizing ppv while pv structures have only corner sharing octahedra. It is the first case of potential post-perovskite nitride.

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Matar S. F., Demazeau G. Potential existence of post-perovskite nitrides; DFT studies of ThTaN3 // Journal of Solid State Chemistry. 2010. Vol. 183. No. 5. pp. 994-999.
GOST all authors (up to 50) Copy
Matar S. F., Demazeau G. Potential existence of post-perovskite nitrides; DFT studies of ThTaN3 // Journal of Solid State Chemistry. 2010. Vol. 183. No. 5. pp. 994-999.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.jssc.2010.03.002
UR - https://doi.org/10.1016/j.jssc.2010.03.002
TI - Potential existence of post-perovskite nitrides; DFT studies of ThTaN3
T2 - Journal of Solid State Chemistry
AU - Matar, Samir F
AU - Demazeau, Gérard
PY - 2010
DA - 2010/05/01 00:00:00
PB - Elsevier
SP - 994-999
IS - 5
VL - 183
SN - 0022-4596
SN - 1095-726X
ER -
BibTex |
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BibTex Copy
@article{2010_Matar,
author = {Samir F Matar and Gérard Demazeau},
title = {Potential existence of post-perovskite nitrides; DFT studies of ThTaN3},
journal = {Journal of Solid State Chemistry},
year = {2010},
volume = {183},
publisher = {Elsevier},
month = {may},
url = {https://doi.org/10.1016/j.jssc.2010.03.002},
number = {5},
pages = {994--999},
doi = {10.1016/j.jssc.2010.03.002}
}
MLA
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MLA Copy
Matar, Samir F., and Gérard Demazeau. “Potential existence of post-perovskite nitrides; DFT studies of ThTaN3.” Journal of Solid State Chemistry, vol. 183, no. 5, May. 2010, pp. 994-999. https://doi.org/10.1016/j.jssc.2010.03.002.
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