Flux pinning and microstructure of a bulk MgB2 doped with diverse additives

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00533111" target="_blank" >RIV/68378271:_____/20:00533111 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0311595" target="_blank" >http://hdl.handle.net/11104/0311595</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6668/aba01c" target="_blank" >10.1088/1361-6668/aba01c</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Flux pinning and microstructure of a bulk MgB2 doped with diverse additives

Popis výsledku v původním jazyce

In MgB2 doped with Ag, the Ag reacts with Mg, forming Mg–Ag phases acting as a vortex pinning medium. In this work, we analyzed the electromagnetic and pinning properties of bulk MgB2 doped with 1 wt% MgB4, 4 wt% Ag, and 1 wt% Dy2O3. In three compounds of MgxB2 + 4 wt% Ag with x = 1, 1.075, and 1.1, the effect of Mg excess was studied. The magnetic moment was measured by a vibrating sample magnetometer. Pinning was studied in terms of the field dependence of the normalized pinning force density, Fn = F/Fmax. In all studied samples, the peak of the Fn(b) dependence (b = B/Birr, Birr being the irreversibility field) was observed at around b = 0.2, indicating a prevailing flux pinning at grain boundaries.

Název v anglickém jazyce

Flux pinning and microstructure of a bulk MgB2 doped with diverse additives

Popis výsledku anglicky

In MgB2 doped with Ag, the Ag reacts with Mg, forming Mg–Ag phases acting as a vortex pinning medium. In this work, we analyzed the electromagnetic and pinning properties of bulk MgB2 doped with 1 wt% MgB4, 4 wt% Ag, and 1 wt% Dy2O3. In three compounds of MgxB2 + 4 wt% Ag with x = 1, 1.075, and 1.1, the effect of Mg excess was studied. The magnetic moment was measured by a vibrating sample magnetometer. Pinning was studied in terms of the field dependence of the normalized pinning force density, Fn = F/Fmax. In all studied samples, the peak of the Fn(b) dependence (b = B/Birr, Birr being the irreversibility field) was observed at around b = 0.2, indicating a prevailing flux pinning at grain boundaries.

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

<a href="/cs/project/LM2018096" target="_blank" >LM2018096: Laboratoř pro syntézu a měření materiálů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Superconductor Science and Technology

ISSN

0953-2048

e-ISSN

—

Svazek periodika

33

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000555716300001

EID výsledku v databázi Scopus

2-s2.0-85089188501