[Wien] AFM type II

 

 

djamel slamnia Sat, 25 Jan 2020 03:42:25 -0800

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  

Re: [Wien] AFM type II

Gavin Abo Sat, 25 Jan 2020 22:33:25 -0800

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

 https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg19515.html