Makale detayı · 1996
Oxygen nitrogen ordering in yttrium nitrogen melilite
Journal of Materials Chemistry
- Yıl
- 1996
- ISSN
0959-9428- Tür
- article
Veri kaynağı ayrımı
- YÖKSİS YÖKSİS makale kaydı
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Özet
İngilizce (OpenAlex)
Nitrogen-15 NMR studies of yttrium nitrogen melilite (Y2Si3O3N4) show that, contrary to previous work based only on 29Si NMR results, the oxygen and nitrogen atoms are ordered in a way that is entirely consistent with Pauling's rules. Nitrogen atoms occupy bridging sites and oxygen atoms occupy terminal sites in the Si2(O,N)7 units, while for the remaining two tetrahedra in the unit cell, oxygen and nitrogen atoms are disordered but with an overall composition of three nitrogens and one oxygen in each tetrahedron. This type of ordering behaviour is consistent with O/N ordering observed in other crystalline Y–Si–O–N ceramics.
Konular
- Advanced ceramic materials synthesis
- Glass properties and applications
- Nuclear materials and radiation effects
Birincil konu Advanced ceramic materials synthesis