Magnetocaloric properties of distilled gadolinium: Effects of structural inhomogeneity and hydrogen impurity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10271613" target="_blank" >RIV/00216208:11320/14:10271613 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/14:00434834

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4883744" target="_blank" >http://dx.doi.org/10.1063/1.4883744</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4883744" target="_blank" >10.1063/1.4883744</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Magnetocaloric properties of distilled gadolinium: Effects of structural inhomogeneity and hydrogen impurity

Popis výsledku v původním jazyce

High-purity Gd prepared by distillation is a structurally inhomogeneous system consisting of needle-shaped crystals of cross section 0.5-2.5 mu m with near-c-axis orientation embedded in a matrix of nanosized (30-100 nm) grains. By measuring the magnetocaloric effect (MCE) directly, we find that the MCE values differ markedly for the plate-shaped samples cut out of a distillate along and perpendicular to the crystals. The effect of small controlled amounts of impurity (hydrogen) on the properties of distilled Gd is further studied. We observe opposite trends in the MCE response to hydrogen charging with respect to the crystal's orientation within the samples and discuss mechanisms interrelating the unique structural morphology with the impurity behavior. As an overall assessment, the Curie temperatures of alpha-GdHx solid solutions increase from 291K up to 294K when increasing hydrogen concentration x from 0 to 0.15. Hydrogenation is found to broaden the ferromagnetic-to-paramagnetic p

Název v anglickém jazyce

Magnetocaloric properties of distilled gadolinium: Effects of structural inhomogeneity and hydrogen impurity

Popis výsledku anglicky

High-purity Gd prepared by distillation is a structurally inhomogeneous system consisting of needle-shaped crystals of cross section 0.5-2.5 mu m with near-c-axis orientation embedded in a matrix of nanosized (30-100 nm) grains. By measuring the magnetocaloric effect (MCE) directly, we find that the MCE values differ markedly for the plate-shaped samples cut out of a distillate along and perpendicular to the crystals. The effect of small controlled amounts of impurity (hydrogen) on the properties of distilled Gd is further studied. We observe opposite trends in the MCE response to hydrogen charging with respect to the crystal's orientation within the samples and discuss mechanisms interrelating the unique structural morphology with the impurity behavior. As an overall assessment, the Curie temperatures of alpha-GdHx solid solutions increase from 291K up to 294K when increasing hydrogen concentration x from 0 to 0.15. Hydrogenation is found to broaden the ferromagnetic-to-paramagnetic p

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>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

Applied Physics Letters

ISSN

0003-6951

e-ISSN

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Svazek periodika

104

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000337915000046

EID výsledku v databázi Scopus

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