Synthesis and physical properties of uranium thin-film hydrides UH2 and UH3

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00574607" target="_blank" >RIV/68378271:_____/23:00574607 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/23:10468607 RIV/26722445:_____/23:N0000021

Výsledek na webu

<a href="https://doi.org/10.1016/j.tsf.2023.139860" target="_blank" >https://doi.org/10.1016/j.tsf.2023.139860</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tsf.2023.139860" target="_blank" >10.1016/j.tsf.2023.139860</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis and physical properties of uranium thin-film hydrides UH2 and UH3

Popis výsledku v původním jazyce

Formation of thin uranium hydrides films, UH2 and UH3, synthesized by direct current reactive sputtering of a uranium metal in an Ar-H2 atmosphere, was explored using variable deposition conditions. Obtained U-H films were studied by a variety of methods, both in situ (photoelectron spectroscopy) and ex situ (x-ray diffraction, transmission electron microscopy, electrical resistivity, and magnetometry). Preparation of thin films allowed us to stabilize the non-existent in bulk UH2 phase as well as the transient α-UH3 (as a residual phase in UH2) and the common stable β-UH3 phase. All types of hydrides are ferromagnetic, the Curie temperatures of UH2 and UH3 (both α and β) are approx. 120 and 170 K, respectively. Ferromagnetism in the thin films is robust and does not depend on structure details while electrical resistivity data reflect disorder in both types of hydrides.

Název v anglickém jazyce

Synthesis and physical properties of uranium thin-film hydrides UH2 and UH3

Popis výsledku anglicky

Formation of thin uranium hydrides films, UH2 and UH3, synthesized by direct current reactive sputtering of a uranium metal in an Ar-H2 atmosphere, was explored using variable deposition conditions. Obtained U-H films were studied by a variety of methods, both in situ (photoelectron spectroscopy) and ex situ (x-ray diffraction, transmission electron microscopy, electrical resistivity, and magnetometry). Preparation of thin films allowed us to stabilize the non-existent in bulk UH2 phase as well as the transient α-UH3 (as a residual phase in UH2) and the common stable β-UH3 phase. All types of hydrides are ferromagnetic, the Curie temperatures of UH2 and UH3 (both α and β) are approx. 120 and 170 K, respectively. Ferromagnetism in the thin films is robust and does not depend on structure details while electrical resistivity data reflect disorder in both types of hydrides.

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

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Thin Solid Films

ISSN

0040-6090

e-ISSN

1879-2731

Svazek periodika

775

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

139860

Kód UT WoS článku

001001103300001

EID výsledku v databázi Scopus

2-s2.0-85154610089