Recent content by atomtm

I found Vesta as a software to visualize crystals . The problem is that I am not still confident with the free parameter z and the coordinates of equivalent positions that would give me a visual result (Any simple example please ??) The parameters that I have are : a = b= 4.7028 , c = 7.3790 ...

Ok thank you M Quack ! I really appreciate your help ! So if anyone knows a software for crystal structure modeling please let me know Thank you in advance

Ok ! Any software you know of?

Great thanks! Any idea where I can look this up for more information?

Another quick question , that I can't find an answer to . The paper states inter-metallic compounds of rare Earth and noble metals with elements of 14,15 group of the periodic table crystallize in the hexagonal crystal system with space group P63/mmc . Their structures belong to the binary...

:) That was nice ! By the way M Quack you give great help here. Thank you ! Awesome forum !

Hello ! I have read several threads on this topic but I don't seem to fully understand the reason for using the reciprocal space in crystallography . Can anyone please provide more information on this subject ?

Thank you very much ! Thing are getting more clear now

By the way I am following this tutorial: http://www.doitpoms.ac.uk/tlplib/crystallography3/structure.php . The last animation is about drawing a crystal structure ( ZnS) . There it says that to draw a crystal you need to know : The crystal system , the Lattice type and the Motif. and also the...

I currently reading about symmetry operations so that maybe I can understand Wyckoff positions. Are there any good resources for further studying?

Ok now I get it! Can you tell me more about the z positions? I know that the unit cell can be described by a,b,c and α,β,γ but never thought of the fact that you can change the x,y,z of the atoms positions - these should be placed like a motif in every lattice point right? so how can you decide...

Isn't that the crystal is described by one unit cell repeated ? What is the meaning of putting one unit cell on top of each other ? Do you create a new unit cell? Thank you for your reply

Hello everyone ! I am currently reading a paper about crystal properties of R2CuIn3 where R=Tb,H0, Er. It states : 1.that based on bibliography they are crystallized in the hexagonal system P6/mmc. With the use of POWLS software , it was found that there was a second phase Cu2In , so its...