Superconducting phase transitions in the milikelvin temperature range in splat-cooled U-Pt alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10369091" target="_blank" >RIV/00216208:11320/17:10369091 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/2043-6254/aa5e1c" target="_blank" >https://doi.org/10.1088/2043-6254/aa5e1c</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/2043-6254/aa5e1c" target="_blank" >10.1088/2043-6254/aa5e1c</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Superconducting phase transitions in the milikelvin temperature range in splat-cooled U-Pt alloys

Popis výsledku v původním jazyce

We present the temperature and magnetic-field dependence of electrical resistivity (ρ(T, B) dependence) in the milikelvin range for U-Pt alloys with Pt concentration in the range of 0-15 atomic percent (at.%) prepared by splat-cooling technique. The high-temperature cubic γ-U phase can be stabilized down to room temperature in the samples with 15 at.% Pt. All samples exhibit superconducting transitions below 1.1K revealed by abrupt resistivity drops with transition widths of several tens of milikelvins in zero magnetic field. The H-T diagrams for all investigated alloys are in good agreement with the Ginzburg-Landau approximation. The U-Pt alloys with cubic γ-U phase are very stable in air and hydrogen exposure at atmospheric conditions. They can absorb a large amount of hydrogen upon applying hydrogen pressure &gt;2.5 bars and easily release it by heating in vacuum, showing the possibility of using U-Pt-based hydrides as a medium for hydrogen storage.

Název v anglickém jazyce

Superconducting phase transitions in the milikelvin temperature range in splat-cooled U-Pt alloys

Popis výsledku anglicky

We present the temperature and magnetic-field dependence of electrical resistivity (ρ(T, B) dependence) in the milikelvin range for U-Pt alloys with Pt concentration in the range of 0-15 atomic percent (at.%) prepared by splat-cooling technique. The high-temperature cubic γ-U phase can be stabilized down to room temperature in the samples with 15 at.% Pt. All samples exhibit superconducting transitions below 1.1K revealed by abrupt resistivity drops with transition widths of several tens of milikelvins in zero magnetic field. The H-T diagrams for all investigated alloys are in good agreement with the Ginzburg-Landau approximation. The U-Pt alloys with cubic γ-U phase are very stable in air and hydrogen exposure at atmospheric conditions. They can absorb a large amount of hydrogen upon applying hydrogen pressure &gt;2.5 bars and easily release it by heating in vacuum, showing the possibility of using U-Pt-based hydrides as a medium for hydrogen storage.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Advances in Natural Sciences: Nanoscience and Nanotechnology [online]

ISSN

2043-6262

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

1-6

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85020842361