Alexander Barcza
Alexander Barcza
Alexander Barcza
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Metamagnets as refrigerants<br />
M<br />
S T<br />
(∂M/∂T) > 0<br />
H<br />
H =0<br />
T t<br />
H 1<br />
T C<br />
Introduction The magnetocaloric effect in metamagnets<br />
T<br />
T<br />
Remember:<br />
H2<br />
∆Tad =<br />
H1 ∆ST =<br />
− T<br />
<br />
∂M<br />
dH<br />
CH,p ∂T p,H<br />
H2<br />
A <strong>Barcza</strong>, K G Sandeman (DMG) CoMnSi-based magnetocaloric compounds 14th August 2007 7 / 27<br />
H 1<br />
<br />
∂M<br />
dH<br />
∂T p,H<br />
At a metamagnetic transition<br />
∆ST is positive,<br />
∆Tad is negative.
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