Magnetic and magnetocaloric properties of itinerant-electron system Hf.sub.1-x./sub.Ta.sub.x./sub.Fe.sub.2./sub. (x = 0.125 and 0.175)

Diop, L.V.B.; Kaštil, Jiří; Isnard, O.; Arnold, Zdeněk; Kamarád, Jiří

doi:https://dx.doi.org/10.1016/j.jallcom.2014.11.234

Number of the records: 1

Magnetic and magnetocaloric properties of itinerant-electron system Hf.sub.1-x./sub.Ta.sub.x./sub.Fe.sub.2./sub. (x = 0.125 and 0.175)

1.

SYSNO ASEP	0452819
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Magnetic and magnetocaloric properties of itinerant-electron system Hf_1-xTa_xFe₂ (x = 0.125 and 0.175)
Author(s)	Diop, L.V.B. (FR) Kaštil, Jiří (FZU-D)_{RID, ORCID} Isnard, O. (FR) Arnold, Zdeněk (FZU-D)_{RID, SAI, ORCID} Kamarád, Jiří (FZU-D)_{RID, ORCID}
Source Title	Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388 Roč. 627, Apr (2015), s. 446-450
Number of pages	5 s.
Language	eng - English
Country	NL - Netherlands
Keywords	itinerant-electron compounds ; magnetic properties ; magnetocaloric effect
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GAP204/12/0692 GA ČR - Czech Science Foundation (CSF)
Institutional support	FZU-D - RVO:68378271
UT WOS	000348504800063
EID SCOPUS	84920746874
DOI	10.1016/j.jallcom.2014.11.234
Annotation	Intrinsic magnetic properties and magnetocaloric effect (MCE) have been investigated for Hf1-xTaxFe2 (x = 0.125 and 0.175) itinerant-electron compounds which exhibit a temperature-induced transition from the ferromagnetic (FM) to the antiferromagnetic (AFM) state. Upon increasing Ta concentration, the ferromagnetic ordering temperature strongly decreases with decreasing the lattice parameters and both the isothermal magnetic entropy change DSM and the adiabatic temperature change DTad are enhanced. An adiabatic temperature change of DTad = 2 and 2.5 K was observed in Hf0.875Ta0.125Fe2 and Hf0.825Ta0.175Fe2, respectively, for a magnetic field change of 3 T. Therefore, the partial substitution of Ta for Hf is highly effective in the enhancement of the magnetocaloric effect in Hf1-xTaxFe2 systems. In addition substitution can be used to tune both the transition temperature but also the magnetic transition from first toward second order type.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2016

Number of the records: 1