Abstract
Effects of the width of direct correlation function peak and the peak at k = 0 on the phase diagram for the two-mode phase field crystal model are examined carefully. The results indicate that increasing the width of direct correlation function peak will expand the stability region of the ordered phases; however, increasing the ratio of peak width will significantly increase the fcc phase region but reduce the bcc phase region. Adding a negative Gaussian peak at k = 0 to the two-mode approximate direct correlation function will compress the phase diagram and make the two-phase coexisting region narrow. © 2013 Chinese Physical Society.
| Translated title of the contribution | Effect of the direct correlation function on phase diagram of the two-mode phase field crystal model |
|---|---|
| Original language | Chinese (Simplified) |
| Article number | 108104 |
| Journal | 物理学报 |
| Volume | 62 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 20 May 2013 |
| Externally published | Yes |
Research Keywords
- 晶体相场模型
- 双模近似
- 相图
- 直接相关函数
- Phase field crystal model
- Two-mode approximation
- Phase diagram
- Direct correlation function
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