| Issue |
EPJ Web of Conferences
Volume 40, 2013
JEMS 2012 – Joint European Magnetic Symposia
|
|
|---|---|---|
| Article Number | 11002 | |
| Number of page(s) | 4 | |
| Section | Magnetism in metals, alloys and intermetallics | |
| DOI | https://doi.org/10.1051/epjconf/20134011002 | |
| Published online | 14 January 2013 | |
https://doi.org/10.1051/epjconf/20134011002
Pressure dependence of magneto-structural properties of Co-doped off-stoichiometric Ni2MnGa alloys
1
Institute of Physics ASCR, v.v.i., Na Slovance
2, 182
21
Prague 8, Czech
Republic
2
IMEM CNR, Parco Area delle Scienze 37/A,
I-43124
Parma,
Italy
3
Dipartimento di Chimica GIAF, Universita di Parma, Viale
G. Usberti 17/A, I-43100
Parma,
Italy
A strong effect of pressure on magnetization and paramagnetic moment of the Co-doped Mn-rich Ni50-xCoxMn25+yGa25-y (x = 5,7,9 and y = 5,6,7,8) Heusler alloys is presented and compared with very weak pressure sensitivity of magnetization of the stoichiometric Ni2MnGa alloy. The effects of both, the pressure and the magnetic field, on temperature of the structural martensitic transition in the alloys are discussed with a use of the Clausius-Clapeyron relations. An analysis of pressure and field effects provides a possibility to evaluate structural and magnetic parts of latent heat of the martensitic transitions in the studied alloys. The Curie temperature of martensite phase of the Co-rich alloys is not affected by pressure.
© Owned by the authors, published by EDP Sciences, 2013
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