[Wien] AFM type II

[Gavin Abo]

Space group 156 is part of the hexagonal crystal family [1].

It seems that AFM type I, II, and/or III typically are only defined for 
body centered cubic (bcc) and face centered cubic (fcc) lattices. That 
is based on books such as "Magnetism and Magnetic Materials" by J. M. D. 
Coey (Figure 6.9 and 6.10) [2] and Quantum Theory of Magnetism by R. M. 
White (Fig. 4.2) [3] defining AFM type I, II, and/or III for bcc and fcc 
lattices.  The bcc and fcc lattices are listed under the 14 Bravais 
Lattices in the table at [4].

The article titled "Ferromagnetic and antiferromagnetic spin 
fluctuations and superconductivity in the hcp-phase of Fe" [5] defines 
AFM type II as having opposite polarization on each layer perpendicular 
to the x-axis.

The article titled "Electronic origins of the magnetic phase transitions 
in zinc-blende Mn chalcogenides" [6] defines AFM type II as a 
super-lattice of period /p/ = 1 and layer orientation G = (111).

Since there seems to be varying definitions for the AFM types, it is 
unknown what your AFM type II and III are as you did not provide the 
definition for it using words or images like in those books and articles.

[1] https://en.wikipedia.org/wiki/Hexagonal_crystal_family
[2] https://doi.org/10.1017/CBO9780511845000
[3] https://www.springer.com/gp/book/9783540651161
[4] https://en.wikipedia.org/wiki/Crystal_structure#Lattice_systems
[5] https://arxiv.org/abs/cond-mat/0112382v1
[6] https://doi.org/10.1103/PhysRevB.48.6111

On 1/25/2020 4:41 AM, djamel slamnia wrote:
> *dear wien2k user's *
> *
> *
> *I got big problem to creat a structure for AFM type II  or type III*
> *
> *
> *Compound :       H   LATTICE,NONEQUIV.ATOMS:  5 156_P3m1  4 atoms ??
> *
> *
> *
> *
> *
> *any solution ???*
>
>
>
> *thanks in advance
> *
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