Pinning behavior in bulk MgB2 prepared using boron powder refined via high-energy ultra-sonication

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00545185" target="_blank" >RIV/68378271:_____/21:00545185 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0321944" target="_blank" >http://hdl.handle.net/11104/0321944</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10948-021-05885-z" target="_blank" >10.1007/s10948-021-05885-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pinning behavior in bulk MgB2 prepared using boron powder refined via high-energy ultra-sonication

Popis výsledku v původním jazyce

We successfully refined a cheap commercial boron powder by means of high-energy ultra-sonication and utilized it in synthesis of bulk MgB2. Rietveld phase analysis of X-ray diffraction pattern revealed completely formed MgB2 with a low amount of MgO. MgB2 bulk prepared of boron ultra-sonicated in ethanol for 15 min showed self-field Jc of around 300 kA/cm2 at 20 K without any compromise in Tc (~39 K). Pinning analysis based on Dew-Hughes expression showed major pinning contribution from grain-boundary pinning (~95.5%), along with a slight contribution from point pinning (4.5%). The microstructure study detected a system of large MgB2 grains (hundreds nm large) and 10–20 nm sized particles, possibly Mg-B-O, formed at MgB2 grain boundaries.

Název v anglickém jazyce

Pinning behavior in bulk MgB2 prepared using boron powder refined via high-energy ultra-sonication

Popis výsledku anglicky

We successfully refined a cheap commercial boron powder by means of high-energy ultra-sonication and utilized it in synthesis of bulk MgB2. Rietveld phase analysis of X-ray diffraction pattern revealed completely formed MgB2 with a low amount of MgO. MgB2 bulk prepared of boron ultra-sonicated in ethanol for 15 min showed self-field Jc of around 300 kA/cm2 at 20 K without any compromise in Tc (~39 K). Pinning analysis based on Dew-Hughes expression showed major pinning contribution from grain-boundary pinning (~95.5%), along with a slight contribution from point pinning (4.5%). The microstructure study detected a system of large MgB2 grains (hundreds nm large) and 10–20 nm sized particles, possibly Mg-B-O, formed at MgB2 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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Superconductivity and Novel Magnetism

ISSN

1557-1939

e-ISSN

1557-1947

Svazek periodika

34

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

1297-1301

Kód UT WoS článku

000648397000001

EID výsledku v databázi Scopus

2-s2.0-85105466553