Variations of magnetic properties of UH3 with modified structure and composition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10335653" target="_blank" >RIV/00216208:11320/16:10335653 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S2468217916300557" target="_blank" >http://www.sciencedirect.com/science/article/pii/S2468217916300557</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jsamd.2016.06.005" target="_blank" >10.1016/j.jsamd.2016.06.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Variations of magnetic properties of UH3 with modified structure and composition

Popis výsledku v původním jazyce

UH3 based hydrides with modified structure and composition can be prepared using high H2 pressures from precursors in the form of rapidly cooled uranium alloys. While the alloys with α-U structure lead to the β-UH3 type of hydrides, γ-U alloys (bcc) lead either to α-UH3 hydride type or nanocrystalline β-UH3. The nanocrystalline β-UH3 structure, appearing for Mo alloying, can accommodate in addition numerous other d-metal components, as Ti, Zr, Fe, Nb. The pure Mo alloyed hydrides (UH3)1MINUS SIGN xMox exhibit increasing Curie temperature TC with maximum exceeding 200 K for x = 0.12-0.15. Other components added reduce the TC increment with respect to pure UH3 (170 K). Also alloying by Zr gives a weaker enhancement. Seen globally, the TC variations are rather modest, which reflects the prominence of interaction of U with H. It is suggested that important ingredient is a charge transfer, depopulating the U-6d and 7s states, while the 5f band stays at the Fermi level.

Název v anglickém jazyce

Variations of magnetic properties of UH3 with modified structure and composition

Popis výsledku anglicky

UH3 based hydrides with modified structure and composition can be prepared using high H2 pressures from precursors in the form of rapidly cooled uranium alloys. While the alloys with α-U structure lead to the β-UH3 type of hydrides, γ-U alloys (bcc) lead either to α-UH3 hydride type or nanocrystalline β-UH3. The nanocrystalline β-UH3 structure, appearing for Mo alloying, can accommodate in addition numerous other d-metal components, as Ti, Zr, Fe, Nb. The pure Mo alloyed hydrides (UH3)1MINUS SIGN xMox exhibit increasing Curie temperature TC with maximum exceeding 200 K for x = 0.12-0.15. Other components added reduce the TC increment with respect to pure UH3 (170 K). Also alloying by Zr gives a weaker enhancement. Seen globally, the TC variations are rather modest, which reflects the prominence of interaction of U with H. It is suggested that important ingredient is a charge transfer, depopulating the U-6d and 7s states, while the 5f band stays at the Fermi level.

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)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Science: Advanced Materials and Devices

ISSN

2468-2179

e-ISSN

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Svazek periodika

1

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

VN - Vietnamská socialistická republika

Počet stran výsledku

8

Strana od-do

185-192

Kód UT WoS článku

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EID výsledku v databázi Scopus

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