Itinerant-electron metamagnetism of the Hf.sub.1-x./sub.Ta.sub.x./sub.Fe.sub.2./sub. (x=0.125 and0.14)compounds under high pressure

0455901 - FZÚ 2016 RIV NL eng J - Článek v odborném periodiku
Diop, L.V.B. - Arnold, Zdeněk - Isnard, O.
Itinerant-electron metamagnetism of the Hf_1-xTa_xFe₂ (x=0.125 and0.14)compounds under high pressure.
Journal of Magnetism and Magnetic Materials. Roč. 395, Dec (2015), s. 251-256. ISSN 0304-8853. E-ISSN 1873-4766
Grant CEP: GA ČR GAP204/12/0692
Institucionální podpora: RVO:68378271
Klíčová slova: magnetic properties * itinerant-electron systems * metamagnetic transition * pressure effect
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.357, rok: 2015

The effect of hydrostatic pressure on the magnetic properties has been investigated for itinerant-electron metamagnetic Hf1-xTaxFe2 (x=0.125 and 0.14) compounds which exhibit a temperature-induced transition from the ferromagnetic (FM) to the antiferromagnetic (AFM) state upon heating. Both the magnetic transition temperature TFM-AFM and the spontaneous magnetization M-s decreases with increasing pressure. The application of an external pressure leads also to the strong increase of the AFM-FM transition held mu H-0(cr). The magnitude of the pressure coefficient, dIn(TFM-AFM )/dP, is much larger than that of dln(M-s)/dP. This extremely large difference between the pressure coefficients is explained by the influence of spin fluctuations on the magnetovolume effects in the compounds Hf0.875Ta0.125Fe2 and Hf0.86Ta0.14./n
Trvalý link: http://hdl.handle.net/11104/0256503