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<p>Space group <font color="#ff0000">156</font> is part of the
hexagonal crystal family [1].</p>
<p>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].<br>
</p>
<p>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.</p>
<p>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 <i>p</i> = 1 and layer
orientation G = (111).<br>
</p>
<p>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.<br>
</p>
[1] <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Hexagonal_crystal_family">https://en.wikipedia.org/wiki/Hexagonal_crystal_family</a><br>
[2] <a class="moz-txt-link-freetext" href="https://doi.org/10.1017/CBO9780511845000">https://doi.org/10.1017/CBO9780511845000</a><br>
[3] <a class="moz-txt-link-freetext" href="https://www.springer.com/gp/book/9783540651161">https://www.springer.com/gp/book/9783540651161</a><br>
[4] <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Crystal_structure#Lattice_systems">https://en.wikipedia.org/wiki/Crystal_structure#Lattice_systems</a><br>
[5] <a class="moz-txt-link-freetext" href="https://arxiv.org/abs/cond-mat/0112382v1">https://arxiv.org/abs/cond-mat/0112382v1</a><br>
[6] <span class="doi-field"><a class="moz-txt-link-freetext" href="https://doi.org/10.1103/PhysRevB.48.6111">https://doi.org/10.1103/PhysRevB.48.6111</a></span>
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<div class="moz-cite-prefix">On 1/25/2020 4:41 AM, djamel slamnia
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:472395439.28628555.1579952482187@mail.yahoo.com">
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<div dir="ltr" data-setdir="false"><font size="3"><b>dear wien2k
user's </b></font></div>
<div dir="ltr" data-setdir="false"><font size="3"><b><br>
</b></font></div>
<div dir="ltr" data-setdir="false"><font size="3"><b>I got big
problem to creat a structure for AFM type II or type III</b></font></div>
<div dir="ltr" data-setdir="false"><font size="3"><b><br>
</b></font></div>
<div dir="ltr" data-setdir="false"><font size="3"><b><span>Compound
: H LATTICE,NONEQUIV.ATOMS: 5 <font
color="#ff0000">156</font>_P3m1 4 atoms ??</span><br>
</b></font></div>
<div dir="ltr" data-setdir="false"><span><font
style="background-color: inherit;" size="3"><b><br>
</b></font></span></div>
<div dir="ltr" data-setdir="false"><span><font
style="background-color: inherit;" size="3"><b><br>
</b></font></span></div>
<div dir="ltr" data-setdir="false"><span><font
style="background-color: inherit;" size="3"><b>any
solution ???</b></font></span></div>
<div dir="ltr" data-setdir="false"><span><br>
</span></div>
<div dir="ltr" data-setdir="false"><span><br>
</span></div>
<div dir="ltr" data-setdir="false"><span><br>
</span></div>
<div dir="ltr" data-setdir="false"><span><b>thanks in advance <br>
</b></span></div>
</div>
</blockquote>
<blockquote type="cite"
cite="mid:472395439.28628555.1579952482187@mail.yahoo.com">
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