Toward a better understanding of the magnetocaloric effect: An experimental and theoretical study of MnFe4Si3.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00435980" target="_blank" >RIV/68378271:_____/14:00435980 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jssc.2014.05.001" target="_blank" >http://dx.doi.org/10.1016/j.jssc.2014.05.001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jssc.2014.05.001" target="_blank" >10.1016/j.jssc.2014.05.001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Toward a better understanding of the magnetocaloric effect: An experimental and theoretical study of MnFe4Si3.

Popis výsledku v původním jazyce

The intermetalliccompoundMnFe4Si3 has been studied by high-resolution Time of Flight(TOF)neutron powder diffraction. MnFe4Si3 crystallizes in the hexagonal space group P63/mcm with lattice constants of a=b=6.8043(4)? and c=4.7254(2) ? at 310K. Magnetic susceptibility measurements show clearly the magnetic transition from paramagnetism to ferromagnetism at about 302(2)K. Magnetic structure refinements based on neutron powder diffraction data with and without external magnetic field reveal strong evidenceon the origin of the large magnetocaloric effect(MCE)in this material as a partial reordering of the spins between 270K and 300K. In addition, electronic structure calculations using the self-consistent, spin-polarized Tight Binding-Linear MuffinTin Orbital method were also accomplished to address the ?coloring problem (Mn/Fe site preference)as well as the unique ferromagnetic behavior of this intermetallic compound.

Název v anglickém jazyce

Toward a better understanding of the magnetocaloric effect: An experimental and theoretical study of MnFe4Si3.

Popis výsledku anglicky

The intermetalliccompoundMnFe4Si3 has been studied by high-resolution Time of Flight(TOF)neutron powder diffraction. MnFe4Si3 crystallizes in the hexagonal space group P63/mcm with lattice constants of a=b=6.8043(4)? and c=4.7254(2) ? at 310K. Magnetic susceptibility measurements show clearly the magnetic transition from paramagnetism to ferromagnetism at about 302(2)K. Magnetic structure refinements based on neutron powder diffraction data with and without external magnetic field reveal strong evidenceon the origin of the large magnetocaloric effect(MCE)in this material as a partial reordering of the spins between 270K and 300K. In addition, electronic structure calculations using the self-consistent, spin-polarized Tight Binding-Linear MuffinTin Orbital method were also accomplished to address the ?coloring problem (Mn/Fe site preference)as well as the unique ferromagnetic behavior of this intermetallic compound.

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Solid State Chemistry

ISSN

0022-4596

e-ISSN

—

Svazek periodika

216

Číslo periodika v rámci svazku

AUG

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

56-64

Kód UT WoS článku

000338177100009

EID výsledku v databázi Scopus

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