Alexander Barcza
Alexander Barcza
Alexander Barcza
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CoMnSi-based metamagnets CoMn 1−x Nix Si<br />
The magnetocaloric effect in CoMn1−xNixSi<br />
magnetisation data<br />
M (Am 2 /kg)<br />
140.0<br />
120.0<br />
100.0<br />
80.0<br />
60.0<br />
40.0<br />
20.0<br />
330 K<br />
CoMn 0.93 Ni 0.07 Si<br />
70 K<br />
330 K<br />
280 K<br />
250 K<br />
230 K<br />
210 K<br />
190 K<br />
170 K<br />
150 K<br />
130 K<br />
110 K<br />
90 K<br />
70 K<br />
0.0<br />
0 1 2 3 4 5<br />
µ H (T)<br />
0<br />
second hexagonal phase was<br />
identified to be ferromagnetic.<br />
magnetic field induced<br />
metamagnetic phase transition<br />
at ∼3 T (70 K).<br />
from M versus T curves: Tt<br />
around 170 K in 1 T.<br />
T C of both phases are above<br />
430 K<br />
isothermal magnetisation versus magnetic field curves were used to<br />
calculate the magnetocaloric effect<br />
A <strong>Barcza</strong>, K G Sandeman (DMG) CoMnSi-based magnetocaloric compounds 14th August 2007 19 / 27
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