Nanostructured compact bulk MgB2 cryo-magnets with record-high critical currents and trapped magnetic fields

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00640163" target="_blank" >RIV/68378271:_____/25:00640163 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0370592" target="_blank" >https://hdl.handle.net/11104/0370592</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-025-97195-w" target="_blank" >10.1038/s41598-025-97195-w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nanostructured compact bulk MgB2 cryo-magnets with record-high critical currents and trapped magnetic fields

Popis výsledku v původním jazyce

We report a significant breakthrough in enhancing the performance of MgB₂ superconductors by engineering novel nanoscale defects using spark plasma sintering (SPS). By incorporating nanoscale MgB2O particles via silver addition, carbon doping, and magnesium excess, we introduce a transformative approach to defect design. This innovation yields exceptional material performance, characterized by a self-field critical current density (Jc) of 1.2 MA/cm2 at 10 K, a single peak in the normalized pinning force density diagram [f(b) = F/Fmax(B/Birr)] at b = 0.3, and the exceptional trapped field values of 4.21 T at 11 K (for a 20 mm diameter and 5.5 mm thick single MgB2 bulk), and 5 T at 15 K and 6 T at 10 K of a triple-stacked compact bulk MgB2 cryo-magnet. These remarkable advancements highlight a novel paradigm in nanoscale defect engineering, with far-reaching implications for superconductors, nanomaterials, and advanced energy systems.

Název v anglickém jazyce

Nanostructured compact bulk MgB2 cryo-magnets with record-high critical currents and trapped magnetic fields

Popis výsledku anglicky

We report a significant breakthrough in enhancing the performance of MgB₂ superconductors by engineering novel nanoscale defects using spark plasma sintering (SPS). By incorporating nanoscale MgB2O particles via silver addition, carbon doping, and magnesium excess, we introduce a transformative approach to defect design. This innovation yields exceptional material performance, characterized by a self-field critical current density (Jc) of 1.2 MA/cm2 at 10 K, a single peak in the normalized pinning force density diagram [f(b) = F/Fmax(B/Birr)] at b = 0.3, and the exceptional trapped field values of 4.21 T at 11 K (for a 20 mm diameter and 5.5 mm thick single MgB2 bulk), and 5 T at 15 K and 6 T at 10 K of a triple-stacked compact bulk MgB2 cryo-magnet. These remarkable advancements highlight a novel paradigm in nanoscale defect engineering, with far-reaching implications for superconductors, nanomaterials, and advanced energy systems.

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Scientific Reports

ISSN

2045-2322

e-ISSN

2045-2322

Svazek periodika

15

Číslo periodika v rámci svazku

Oct

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

36308

Kód UT WoS článku

001597098000018

EID výsledku v databázi Scopus

2-s2.0-105019114296