Informace o publikaci
Pressure study of magnetism in off-stoichiometric Ni2MnSn-based alloys
| Autoři | |
|---|---|
| Rok publikování | 2021 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Journal of Magnetism and Magnetic Materials |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | https://doi.org/10.1016/j.jmmm.2021.168345 |
| Doi | http://dx.doi.org/10.1016/j.jmmm.2021.168345 |
| Klíčová slova | Heusler alloy; Ni2MnSn; Magnetism; Electric resistivity; High pressure |
| Popis | Pressure study of the Heusler Ni2MnSn-based alloys revealed divergent values of the pressure effects on magnetic properties within a group of the off-stoichiometric alloys. An increase in temperature of the structural martensitic transition in the Mn-rich alloys under pressure is adequate for volume changes that accompanied the structural transition. An anomalous decrease of electric resistivity of the alloys in vicinity of the structural transition verifies a transfer into ferromagnetic order of the alloys above the transition temperatures. Almost no changes of exchange-spring and exchange-bias effects were detected under pressure in all the studied alloys. All the observed pressure effects are discussed with help of recent quantum-mechanical calculations of effects of multiple point-defects on magnetism of stoichiometric Ni2MnSn alloy. |