Magnetic and magnetocaloric properties of itinerant-electron system Hf1-xTaxFe2 (x = 0.125 and 0.175)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00452819" target="_blank" >RIV/68378271:_____/15:00452819 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jallcom.2014.11.234" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2014.11.234</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2014.11.234" target="_blank" >10.1016/j.jallcom.2014.11.234</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Magnetic and magnetocaloric properties of itinerant-electron system Hf1-xTaxFe2 (x = 0.125 and 0.175)

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Magnetic and magnetocaloric properties of itinerant-electron system Hf1-xTaxFe2 (x = 0.125 and 0.175)

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GAP204%2F12%2F0692" target="_blank" >GAP204/12/0692: Magnetické polyfunkční materiály - nové přístupy teorie a experimentu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Svazek periodika

627

Číslo periodika v rámci svazku

Apr

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

446-450

Kód UT WoS článku

000348504800063

EID výsledku v databázi Scopus

2-s2.0-84920746874