Electron microscopy
  
Comparison between Space Group P1 and Space Group Irnmm
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Figure 968 shows (110) plane of the unit cell of ReSi1.75 (Space Group P1) compared to the (110) plane of the orthorhombic cell of "ReSi2" (Space Group Irnmm). [1]

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Figure 968. (110) plane of the unit cell of ReSi1.75 (Space Group P1) compared to the (110) plane of the orthorhombic cell of "ReSi2" (Space Group Irnmm). The Si 3 and Si 4 sites in the ReSi1.75 structure are only partially occupied.  [1] Here, the symmetry of the crystal structure has to be reduced in the space group P1 as a result of a monoclinic distortion of the C11b structure.

 

 

 

 

 

 

 

 

 

[1] Leo Miglio & Francois d'Heurle, SUICIDES Fundamentals and Applications: Proceedings of the 16th Course of the International School of Solid State Physics, 2000.

 

 
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