Hydrogenation-induced changes of the crystal structure and magnetic properties of Er2Ni2Sn

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10398893" target="_blank" >RIV/00216208:11320/19:10398893 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.DxoMJf.Mh" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.DxoMJf.Mh</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2019.04.222" target="_blank" >10.1016/j.jallcom.2019.04.222</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrogenation-induced changes of the crystal structure and magnetic properties of Er2Ni2Sn

Popis výsledku v původním jazyce

Hydrogenation of the intermetallic compound Er2Ni2Sn (Mo2FeB2-type structure) was studied. The hydride Er2Ni2SnH3.5 was formed under a hydrogen pressure of 65 kPa, after heating up to 373 K. The structure type of the metal sublattice was preserved, but the hydrogenation resulted in anisotropic lattice expansion prevailing in the crystallographic direction c. A lower hydride, Er2Ni2SnH3.5-x, was obtained by heating Er2Ni2SnH3.5 up to 573 K in dynamic vacuum. For Er2Ni2SnH3.5-x the lattice expansion in the ab plane was accompanied by a reduction of the lattice parameter c. Er2Ni2Sn is an antiferromagnet with T-N = 6.1 K, whereas the hydrides Er2Ni2SnH3.5 and Er2Ni2SnH3.5-x remain paramagnetic down to 2 K (limit of the measurements). Hydrogenation results in weakening of the magnetic interactions, in agreement with the decrease of the conduction electron concentration caused by chemical bonding between hydrogen and metal atoms. (c) 2019 Elsevier B.V. All rights reserved.

Název v anglickém jazyce

Hydrogenation-induced changes of the crystal structure and magnetic properties of Er2Ni2Sn

Popis výsledku anglicky

Hydrogenation of the intermetallic compound Er2Ni2Sn (Mo2FeB2-type structure) was studied. The hydride Er2Ni2SnH3.5 was formed under a hydrogen pressure of 65 kPa, after heating up to 373 K. The structure type of the metal sublattice was preserved, but the hydrogenation resulted in anisotropic lattice expansion prevailing in the crystallographic direction c. A lower hydride, Er2Ni2SnH3.5-x, was obtained by heating Er2Ni2SnH3.5 up to 573 K in dynamic vacuum. For Er2Ni2SnH3.5-x the lattice expansion in the ab plane was accompanied by a reduction of the lattice parameter c. Er2Ni2Sn is an antiferromagnet with T-N = 6.1 K, whereas the hydrides Er2Ni2SnH3.5 and Er2Ni2SnH3.5-x remain paramagnetic down to 2 K (limit of the measurements). Hydrogenation results in weakening of the magnetic interactions, in agreement with the decrease of the conduction electron concentration caused by chemical bonding between hydrogen and metal atoms. (c) 2019 Elsevier B.V. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/LM2018096" target="_blank" >LM2018096: Laboratoř pro syntézu a měření materiálů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

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

794

Číslo periodika v rámci svazku

červenec

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

7

Strana od-do

101-107

Kód UT WoS článku

000468060800014

EID výsledku v databázi Scopus

2-s2.0-85064862250