Symmetry relations in wurtzite nitrides and oxide nitrides and the curious case of Pmc2(1)
- Binary III-V nitrides such as AlN, GaN and InN in the wurtzite-type structure have long been considered as potent semiconducting materials because of their optoelectronic properties, amongst others. With rising concerns over the utilization of scarce elements, a replacement of the trivalent cations by others in ternary and multinary nitrides has led to the development of different variants of nitrides and oxide nitrides crystallizing in lower-symmetry variants of wurtzite. This work presents the symmetry relationships between these structural types specific to nitrides and oxide nitrides and updates some prior work on this matter. The non-existence of compounds crystallizing in Pmc2(1), formally the highest subgroup of the wurtzite type fulfilling Pauling's rules for 1:1:2 stoichiometries, has been puzzling scientists for a while; a rationalization is given, from a crystallographic basis, of why this space group is unlikely to be adopted.
Author details: | Joachim BreternitzORCiDGND, Susan SchorrORCiDGND |
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DOI: | https://doi.org/10.1107/S2053273320015971 |
ISSN: | 2053-2733 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/33944799 |
Title of parent work (English): | Acta crystallographica / International Union of Crystallography. Section A, Foundations and advances |
Publisher: | Blackwell |
Place of publishing: | Oxford [u.a.] |
Publication type: | Article |
Language: | English |
Date of first publication: | 2021/03/23 |
Publication year: | 2021 |
Release date: | 2024/05/29 |
Tag: | group-subgroup relationships; nitride materials; wurtzite type |
Volume: | 77 |
Issue: | 3 |
Number of pages: | 9 |
First page: | 208 |
Last Page: | 216 |
Funding institution: | Projekt DEAL |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Peer review: | Referiert |
Publishing method: | Open Access / Hybrid Open-Access |
License (German): | CC-BY - Namensnennung 4.0 International |