Tuning the top-seeded melt growth of REBCO single-domain superconducting bulks by a pyramid-like buffer stack

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924257" target="_blank" >RIV/60461373:22310/22:43924257 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22810/22:43924257

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S027288422103488X?token=8753A07FF1AA12EA2A04FB01A75EA532E3ABC7C21AA386DB9062BC583492E9D9C0DC1055D94E46552F0DEFA24DED5D99&originRegion=eu-west-1&originCreation=20230104120759" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S027288422103488X?token=8753A07FF1AA12EA2A04FB01A75EA532E3ABC7C21AA386DB9062BC583492E9D9C0DC1055D94E46552F0DEFA24DED5D99&originRegion=eu-west-1&originCreation=20230104120759</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2021.11.081" target="_blank" >10.1016/j.ceramint.2021.11.081</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tuning the top-seeded melt growth of REBCO single-domain superconducting bulks by a pyramid-like buffer stack

Popis výsledku v původním jazyce

In this contribution, the usage of a pyramid-like buffer stack for optimization of the top-seeded melt growth process of GdBCO (GdBa2Cu3O7-delta) single-domain superconductors is demonstrated. The process was optimized by the addition of SmBCO into GdBCO/Ag into the buffer precursor powder, which effectively increased the peritectic temperature of the final mixed powder in the pyramid-like buffer stack. As such, this approach can be also used for other REBCO systems by selecting rare earth with a higher peritectic temperature and adding it to the buffer pellets. The thermal behavior of the powders was studied by STA. This enables fast and effective crystal growth through the buffer stack and the formation of large effective seeds. This approach also allows for reliable and precise tuning of growth angle and together with effective seed size facilitates tuning of a-b to c sector ratio. The phase composition of precursors and prepared bulks were studied by XRD. The microstructure was also studied by SEM and OM in detail. Subsequently, levitation force and trapped field were measured. Results confirmed that the addition of at least a single buffer pellet improved the melt growth process significantly by acting as a large effective seed. Superconducting properties of the samples grown by pyramid-like buffer stack are superior in comparison to reference TSMG samples.

Název v anglickém jazyce

Tuning the top-seeded melt growth of REBCO single-domain superconducting bulks by a pyramid-like buffer stack

Popis výsledku anglicky

In this contribution, the usage of a pyramid-like buffer stack for optimization of the top-seeded melt growth process of GdBCO (GdBa2Cu3O7-delta) single-domain superconductors is demonstrated. The process was optimized by the addition of SmBCO into GdBCO/Ag into the buffer precursor powder, which effectively increased the peritectic temperature of the final mixed powder in the pyramid-like buffer stack. As such, this approach can be also used for other REBCO systems by selecting rare earth with a higher peritectic temperature and adding it to the buffer pellets. The thermal behavior of the powders was studied by STA. This enables fast and effective crystal growth through the buffer stack and the formation of large effective seeds. This approach also allows for reliable and precise tuning of growth angle and together with effective seed size facilitates tuning of a-b to c sector ratio. The phase composition of precursors and prepared bulks were studied by XRD. The microstructure was also studied by SEM and OM in detail. Subsequently, levitation force and trapped field were measured. Results confirmed that the addition of at least a single buffer pellet improved the melt growth process significantly by acting as a large effective seed. Superconducting properties of the samples grown by pyramid-like buffer stack are superior in comparison to reference TSMG samples.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

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

2022

Kód důvěrnosti údajů

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

Název periodika

Ceramics International

ISSN

0272-8842

e-ISSN

1873-3956

Svazek periodika

48

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

5377-5385

Kód UT WoS článku

000743260900002

EID výsledku v databázi Scopus

2-s2.0-85119087358