Počet záznamů: 1

Extraordinary magnetic and structural properties of the off-stoichiometric and the Co-doped Ni.sub.2./sub.MnGa Heusler alloys under high pressure

SYSNO ASEP	0435763
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Extraordinary magnetic and structural properties of the off-stoichiometric and the Co-doped Ni₂MnGa Heusler alloys under high pressure
Tvůrce(i)	Kamarád, Jiří (FZU-D)_{RID, ORCID} Albertini, F. (IT) Arnold, Zdeněk (FZU-D)_{RID, SAI, ORCID} Fabbrici, S. (IT) Kaštil, Jiří (FZU-D)_{RID, ORCID}
Zdroj.dok.	Acta Materialia. - : Elsevier - ISSN 1359-6454 Roč. 77, Sep (2014), s. 60-67
Poč.str.	8 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	Heusler alloys ; martensitic transformation ; magnetic properties ; high pressure
Vědní obor RIV	BM - Fyzika pevných látek a magnetismus
CEP	GAP204/12/0692 GA ČR - Grantová agentura ČR
Institucionální podpora	FZU-D - RVO:68378271
UT WOS	000340303200006
DOI	10.1016/j.actamat.2014.06.011
Anotace	To show and to describe a contrast between the magnetic and structural properties of the stoichiometric Ni2MnGa alloy and the off-stoichiometric and the Co-doped Ni–Mn–Ga alloys, we report the effect of high hydrostatic pressure (up to 1.2 GPa) on magnetization and the critical temperatures of structural and magnetic transitions in the off-stoichiometric Ni50−xMn25+x+yGa25−y and the Co-doped Ni50−xCoxMn25+yGa25−y Heusler alloys. A huge decrease in their saturation magnetization MM(5 K) under pressure was observed with an extreme value of pressure parameter d ln MM(5 K)/dP = −56 × 10−3 GPa−1 in the case of the Ni39Co11Mn34Ga16 alloy. The Curie temperature TCA increases under pressure in all the studied alloys. Almost identical values of dTCA/dP = +4.7 ÷ +5.9 K GPa−1 point to a normalized steepness of a dependence of exchange interactions on interatomic distances.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2015

Počet záznamů: 1