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wenxuan5788

金虫 (正式写手)

[交流] [求助]Murnaghan状态方程怎么拟合?

请问哪位高人有Murnaghan状态方程的拟合程序?
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cyber334

新虫 (初入文坛)

★ ★
gromacs(金币+2,VIP+0):谢谢指点
I used two programs to fit E-V data to the third order Birch-Murnaghan equation.
(1) A small utility program provided with the CUSP package (Vanderbilt's program).
(2) EOS_1.0 (written by J.K. Dewhurst— http://physik.uni-graz.at/ kde/eos.html).
3楼2008-10-09 08:34:28
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y1ding

铁杆木虫 (著名写手)

google murnfit F90
2楼2008-09-26 13:48:43
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wenxuan5788

金虫 (正式写手)

[求助]关于Murnaghan状态方程拟合中零点晶格能量修正

请问一般情况下需不需要考虑用Morruzzi-Janak-Williams进行零点晶格能量修正?能不能介绍一下这方面的文献

[ Last edited by wenxuan5788 on 2008-10-10 at 09:53 ]
4楼2008-10-10 09:51:27
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cyber334

新虫 (初入文坛)

About zero point energy

About zero point energy, it depends. You have to compare the zero point energy with the internal energy at 0K. If it makes a significant contribution, then you definitely have to consider it.
There are mainly two approach to calculated the zero point energy. 1) Using quasi-debye model; 2) Calculate the phonon structure, and get the zero point energy 1/2hw.
5楼2008-10-18 00:27:48
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