Properties of Ag doped Bi-superconductors prepared by solid state and sol-gel methods

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F06%3A00016965" target="_blank" >RIV/60461373:22310/06:00016965 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Properties of Ag doped Bi-superconductors prepared by solid state and sol-gel methods

Original language description

Superconductive ceramics with nominal composition Bi3.2Pb0.8Sr4Ca5Cu7Ox were prepared by solid state synthesis with 10 wt% of nanopowdered silver and were compared with those prepared by sol-gel method. The "in situ" polymerization route with citric acidand ethylene glycol was used to enhance homogeneity of the reaction mixture. The quality of samples was characterized by X-ray analysis, scanning electronic microscopy and the measurement of porosity. The superconducting properties were investigated bythe measurement of the temperature dependence of magnetic susceptibility and by current voltage characteristic. All samples have critical temperatures in the range from 109 to112 K. Addition of silver always increases the volume of Bi-2223 phase and critical current density of the samples. Sol-gel samples reveal lower porosity, higher bulk density and better connectivity of the grains, resulting in the further enhancement of critical current density.

Czech name

Vlastnosti bismutového supravodiče dopovaného střibrem a připraveného reakcí v pevné fázi a metodou sol-gel

Czech description

Supravodivá keramika nominálního složení Bi3.2Pb0.8Sr4Ca5Cu7Ox byla připravena reakcí v pevné fázi s přídavkem 10 hm.% Ag. Její vlastnosti byly porovnány s vlastnostmi vzorků připravených metodou sol-gel. Byla měřena porozita, fázové složení (XRD) a mikrostruktura sledována pomocí SEM. Transportní vlastnosti byly charakterizovány měřením teplotní závislosti magnetické susceptibility a volt-ampérovou charakteristikou.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CA - Inorganic chemistry

OECD FORD branch

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Project

<a href="/en/project/GA203%2F05%2F0114" target="_blank" >GA203/05/0114: Bi-based superconductors with nanosize dopants</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

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

Name of the periodical

Advances in Science and Technology

ISSN

1661-819X

e-ISSN

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Volume of the periodical

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Issue of the periodical within the volume

47

Country of publishing house

CH - SWITZERLAND

Number of pages

4

Pages from-to

104-107

UT code for WoS article

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EID of the result in the Scopus database

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