Size and shape dependent order–disorder phase transition of Co–Pt nanowires
Monte Carlo simulation of the order–disorder transition revealed that the transition temperature of Co–Pt nanowires increases with wire diameter, approaching the bulk value if the size is large enough. The transition temperature is affected by the shape of cross-section, though the shape effect is l...
| Những tác giả chính: | , , , , , |
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| Định dạng: | Journal Article |
| Ngôn ngữ: | English |
| Được phát hành: |
2013
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| Những chủ đề: | |
| Truy cập trực tuyến: | https://hdl.handle.net/10356/97017 http://hdl.handle.net/10220/13120 |
| _version_ | 1826122544321658880 |
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| author | Qi, Weihong Liu, Chenze Ouyang, Bin Wang, Xing Wei, Lanying Sun, Changqing |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Qi, Weihong Liu, Chenze Ouyang, Bin Wang, Xing Wei, Lanying Sun, Changqing |
| author_sort | Qi, Weihong |
| collection | NTU |
| description | Monte Carlo simulation of the order–disorder transition revealed that the transition temperature of Co–Pt nanowires increases with wire diameter, approaching the bulk value if the size is large enough. The transition temperature is affected by the shape of cross-section, though the shape effect is less significant than the size effect. It is showed that the rise of transition temperature in nanowires is largely due to the decrease of surface area compared with nanoparticles. The phase separation and tetragonalization are discussed by introducing mixing parameter and asphericity parameter. It is also found that the order–disorder transition starts from the surface and then to the core, indicating that the order–disorder transition of nanowires is a surface-dominant phenomenon, governed by the atomic under coordination. |
| first_indexed | 2024-10-01T05:50:12Z |
| format | Journal Article |
| id | ntu-10356/97017 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:50:12Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/970172020-03-07T14:02:45Z Size and shape dependent order–disorder phase transition of Co–Pt nanowires Qi, Weihong Liu, Chenze Ouyang, Bin Wang, Xing Wei, Lanying Sun, Changqing School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Monte Carlo simulation of the order–disorder transition revealed that the transition temperature of Co–Pt nanowires increases with wire diameter, approaching the bulk value if the size is large enough. The transition temperature is affected by the shape of cross-section, though the shape effect is less significant than the size effect. It is showed that the rise of transition temperature in nanowires is largely due to the decrease of surface area compared with nanoparticles. The phase separation and tetragonalization are discussed by introducing mixing parameter and asphericity parameter. It is also found that the order–disorder transition starts from the surface and then to the core, indicating that the order–disorder transition of nanowires is a surface-dominant phenomenon, governed by the atomic under coordination. 2013-08-15T07:19:15Z 2019-12-06T19:37:56Z 2013-08-15T07:19:15Z 2019-12-06T19:37:56Z 2012 2012 Journal Article Ouyang, B., Qi, W., Liu, C., Wang, X., Wei, L.,& Sun, C. (2012). Size and shape dependent order–disorder phase transition of Co–Pt nanowires. Computational materials science, 63286-291. https://hdl.handle.net/10356/97017 http://hdl.handle.net/10220/13120 10.1016/j.commatsci.2012.06.017 en Computational materials science |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Qi, Weihong Liu, Chenze Ouyang, Bin Wang, Xing Wei, Lanying Sun, Changqing Size and shape dependent order–disorder phase transition of Co–Pt nanowires |
| title | Size and shape dependent order–disorder phase transition of Co–Pt nanowires |
| title_full | Size and shape dependent order–disorder phase transition of Co–Pt nanowires |
| title_fullStr | Size and shape dependent order–disorder phase transition of Co–Pt nanowires |
| title_full_unstemmed | Size and shape dependent order–disorder phase transition of Co–Pt nanowires |
| title_short | Size and shape dependent order–disorder phase transition of Co–Pt nanowires |
| title_sort | size and shape dependent order disorder phase transition of co pt nanowires |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/97017 http://hdl.handle.net/10220/13120 |
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