Alexander Barcza
Alexander Barcza
Alexander Barcza
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CoMnSi-based metamagnets CoMn 1−x Nix Si<br />
Second hexagonal crystallographic phase<br />
high temperature hexagonal<br />
structure is metastable at room<br />
temperature<br />
hexagonal P63/mmc phase with<br />
Ni2In type<br />
a=3.93 Å, c=5.22 Å<br />
ac-plane viewed along b-axis of the orthorhombic unit cell<br />
Mn in ( 1 3 , 2 3 , 3 4 ) (pink), Co in ( 1 3 , 2 3 , 1 ) (blue), Si in (0, 0, 0)<br />
4<br />
(yellow)<br />
axis-transformation during orthorhombic to hexagonal unit cell<br />
transition:<br />
a =<br />
hex b ortho<br />
A <strong>Barcza</strong>, K G Sandeman (DMG) CoMnSi-based magnetocaloric compounds 14th August 2007 15 / 27<br />
a hex<br />
1/2<br />
3<br />
a = hex<br />
c ortho
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