UH3-based ferromagnets: new look at an old material

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00458912" target="_blank" >RIV/68378271:_____/16:00458912 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/16:10321710

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jmmm.2015.07.053" target="_blank" >http://dx.doi.org/10.1016/j.jmmm.2015.07.053</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmmm.2015.07.053" target="_blank" >10.1016/j.jmmm.2015.07.053</a>

Jazyk výsledku

angličtina

Název v původním jazyce

UH3-based ferromagnets: new look at an old material

Popis výsledku v původním jazyce

UH3 is the first discovered ferromagnet purely based on 5f electronic states. Although the U metal is Pauli paramagnet, reduced 5f-5f overlap in compounds allows for moment formation and ordering. The stable form beta-UH3, has its high TC = 165 K. Properties of metastable alpha-UH3 with could be never well established. We attempted to synthesize alpha phase starting from the gamma-U alloys. While up to 15% Zr a contamination by beta-phase was obtained, 20% Zr yielded single alpha phase. The TC value remains high and very similar to that of beta phase. It is an increase up to 187 K for 15% Zr followed by a weak decrease. Magnetic moments remain close to 1 mB/U atom. The 5f magnetism exhibits a high coercivity (up to 5.5 T) and large spontaneous volume magnetostriction 0.0032. Even higher increase of TC, reaching up to 203 K, can be achieved in analogous Mo stabilized hydrides, which yield an amorphous structure.n

Název v anglickém jazyce

UH3-based ferromagnets: new look at an old material

Popis výsledku anglicky

UH3 is the first discovered ferromagnet purely based on 5f electronic states. Although the U metal is Pauli paramagnet, reduced 5f-5f overlap in compounds allows for moment formation and ordering. The stable form beta-UH3, has its high TC = 165 K. Properties of metastable alpha-UH3 with could be never well established. We attempted to synthesize alpha phase starting from the gamma-U alloys. While up to 15% Zr a contamination by beta-phase was obtained, 20% Zr yielded single alpha phase. The TC value remains high and very similar to that of beta phase. It is an increase up to 187 K for 15% Zr followed by a weak decrease. Magnetic moments remain close to 1 mB/U atom. The 5f magnetism exhibits a high coercivity (up to 5.5 T) and large spontaneous volume magnetostriction 0.0032. Even higher increase of TC, reaching up to 203 K, can be achieved in analogous Mo stabilized hydrides, which yield an amorphous structure.n

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Magnetism and Magnetic Materials

ISSN

0304-8853

e-ISSN

—

Svazek periodika

400

Číslo periodika v rámci svazku

Feb

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

130-136

Kód UT WoS článku

000366157600029

EID výsledku v databázi Scopus

2-s2.0-84949317497