Lu, Fengyuan ; Huang, Mengbing ; Yaqoob, Faisal ; Lang, Maik ; Namavar, Fereydoon ; Trautmann, Christina ; Sun, Hongtao ; Ewing, Rodney C. ; Lian, Jie (2012)
Displacive radiation-induced structural contraction in nanocrystalline ZrN.
In: Applied Physics Letters, 101 (4)
doi: 10.1063/1.4738772
Article, Bibliographie
Abstract
Nanocrystalline ZrN thin films with 5 nm grain size, prepared by ion beam assisted deposition, maintained their isometric structure upon intensive displacive and ionizing irradiations, indicating an extremely high stability similar to bulk ZrN. However, a unique structural contraction up to 1.42% in lattice parameter occurred only in nano-sized ZrN upon displacive irradiations. A significant nitrogen loss occurred with reduced N:Zr atomic ratio to 0.88, probably due to the production of displaced nitrogen atoms and fast diffusion along grain boundaries in nanocrystalline ZrN matrix. The accumulation of nitrogen vacancies and related strain relaxation may be responsible for the structural contraction.
| Item Type: | Article |
|---|---|
| Erschienen: | 2012 |
| Creators: | Lu, Fengyuan ; Huang, Mengbing ; Yaqoob, Faisal ; Lang, Maik ; Namavar, Fereydoon ; Trautmann, Christina ; Sun, Hongtao ; Ewing, Rodney C. ; Lian, Jie |
| Type of entry: | Bibliographie |
| Title: | Displacive radiation-induced structural contraction in nanocrystalline ZrN |
| Language: | English |
| Date: | 24 July 2012 |
| Publisher: | AIP Publishing |
| Journal or Publication Title: | Applied Physics Letters |
| Volume of the journal: | 101 |
| Issue Number: | 4 |
| DOI: | 10.1063/1.4738772 |
| Abstract: | Nanocrystalline ZrN thin films with 5 nm grain size, prepared by ion beam assisted deposition, maintained their isometric structure upon intensive displacive and ionizing irradiations, indicating an extremely high stability similar to bulk ZrN. However, a unique structural contraction up to 1.42% in lattice parameter occurred only in nano-sized ZrN upon displacive irradiations. A significant nitrogen loss occurred with reduced N:Zr atomic ratio to 0.88, probably due to the production of displaced nitrogen atoms and fast diffusion along grain boundaries in nanocrystalline ZrN matrix. The accumulation of nitrogen vacancies and related strain relaxation may be responsible for the structural contraction. |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Ion-Beam-Modified Materials |
| Date Deposited: | 19 Mar 2024 07:12 |
| Last Modified: | 19 Mar 2024 07:12 |
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