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jingshanfeiyan

[交流] 【求助】建立表面模型

想比较一种药剂和两种晶体的吸附能大小,在建立模型的时候是不是应该保证所建立的模型大小相同?文献是这么描述的:
A surface cell was created from the unit cell of mineral at a given Miller plane. Several initial surface cells (pertaining to the cleavage of each Miller
plane at different locations) were created. Each of these surface
cell was then extended to a periodic super lattice of approximately
25×25 A° .
The cluster obtained from each surface cell was minimized with respect to energy.不知道文献里所说的扩展是如何扩展?
我对晶体切面后建立超晶胞,氯化钠和光卤石晶胞中原子数目相差很大,应该怎么建立相同大小的表面模型?

[ Last edited by freshgirl on 2009-6-26 at 17:15 ]
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niliu

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引用回帖:
Originally posted by jingshanfeiyan at 2008-5-5 16:20:
想比较一种药剂和两种晶体的吸附能大小,在建立模型的时候是不是应该保证所建立的模型大小相同?文献是这么描述的:
A surface cell was created from the unit cell of mineral at a given Miller plane. Sever ...

应该是让它们的表面面积大致相等。
如都是约25×25 A^2
2楼2008-05-05 16:34:12
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