Substitution of V, Nb and Ta in Bi-based superconductor

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Substitution of V, Nb and Ta in Bi-based superconductor

Popis výsledku v původním jazyce

Among the high-Tc superconductors, Bi-Sr-Ca-Cu-O (phase Bi-2223 with Tc = 110 K) appears to be the most promising candidate for the practical applications. This polycrystaline material carries a very low current compared to their single-crystal counterpart. This is due to the problem of grain boundaries. The weakly coupled grains are known to limit the critical current density of these materials. Some of the reasons for the formation of weak links are misorientation at grain boundaries, vacancy, oxygendeficiency and composition variations [1]. On the other hand the atomic substitutions and second-phase particle addition can influence volumes of the superconducting phases and/or provide flux pinning centers and thus enhance the critical current densityof polycrystalline samples.System Bi-Sr-Ca-Cu-O contains relatively cheap elements none of that is toxic. There were discovered three superconducting phases, of general formula Bi2Sr2Can-1CunO2n+4. With increasing n their critical temper

Název v anglickém jazyce

Substitution of V, Nb and Ta in Bi-based superconductor

Popis výsledku anglicky

Among the high-Tc superconductors, Bi-Sr-Ca-Cu-O (phase Bi-2223 with Tc = 110 K) appears to be the most promising candidate for the practical applications. This polycrystaline material carries a very low current compared to their single-crystal counterpart. This is due to the problem of grain boundaries. The weakly coupled grains are known to limit the critical current density of these materials. Some of the reasons for the formation of weak links are misorientation at grain boundaries, vacancy, oxygendeficiency and composition variations [1]. On the other hand the atomic substitutions and second-phase particle addition can influence volumes of the superconducting phases and/or provide flux pinning centers and thus enhance the critical current densityof polycrystalline samples.System Bi-Sr-Ca-Cu-O contains relatively cheap elements none of that is toxic. There were discovered three superconducting phases, of general formula Bi2Sr2Can-1CunO2n+4. With increasing n their critical temper

Druh

D - Stať ve sborníku

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název statě ve sborníku

Development of Materials Science in Research and Education

ISBN

80-89088-16-3

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

21-22

Název nakladatele

STU Bratislava

Místo vydání

Bratislava

Místo konání akce

Lednice, ČR

Datum konání akce

31. 8. 2004

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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