[Wien] How to get exact 25% doping ?

2014-05-24 Thread Naseem Hassan
Dear community Fellows

I created a 2*2*2 supercell and got 31 Cd atoms. I want to replace Cd atoms
by Zn atoms so that to get 25% of doping. 25% of 31 atoms is 7.75 which is
not a whole number. How to obtain whole number to get exact 25% of doping ?.

Thank You All
Naseem
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Re: [Wien] How to get exact 25% doping ?

2014-05-24 Thread tran

It's not possible to get 31 atoms in a 2*2*2 supercell,
unless you manually removed one. I guess it should be 32 in your case.

On Sun, 25 May 2014, Naseem Hassan wrote:


Dear community Fellows

I created a 2*2*2 supercell and got 31 Cd atoms. I want to replace Cd atoms
by Zn atoms so that to get 25% of doping. 25% of 31 atoms is 7.75 which is
not a whole number. How to obtain whole number to get exact 25% of doping ?.

Thank You All
Naseem



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Re: [Wien] How to get exact 25% doping ?

2014-05-24 Thread Muhammad Sajjad
Yep 31 atoms are not possible in 2*2*2 supercell. I think there should be
64 atoms (replace 8 atoms for 25% doping), as in 1*1*1 supercell 8
atoms(replace 1 atom), in 2*1*1 supercell 16 atoms (replace 2 atoms) and in
2*2*1 super cell 32 atoms (replace 4 atoms).


On Sun, May 25, 2014 at 4:44 AM, t...@theochem.tuwien.ac.at wrote:

 It's not possible to get 31 atoms in a 2*2*2 supercell,
 unless you manually removed one. I guess it should be 32 in your case.


 On Sun, 25 May 2014, Naseem Hassan wrote:

  Dear community Fellows

 I created a 2*2*2 supercell and got 31 Cd atoms. I want to replace Cd
 atoms
 by Zn atoms so that to get 25% of doping. 25% of 31 atoms is 7.75 which is
 not a whole number. How to obtain whole number to get exact 25% of doping
 ?.

 Thank You All
 Naseem


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 wien@zeus.theochem.tuwien.ac.at/index.html

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