Addition of Ag, Pb, K, or Li to Bi2Sr2CaCu2Oy whisker

In order to examine the growth mechanism of a Bi2Sr2 CaCu2Oy (Bi2212) superconducting whisker, such elements as Ag, Pb, K, and Li were added to the Bi2212 powder in the molar ratio of 0.2 together with changes in sintering temperature. K addition and sintering temperature at 865 C achieved the faste...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2002-10, Vol.378-381, p.152-154
Main Authors: Yamada, Masasumi, Hosi, Naotugu, Kambe, Shiro
Format: Article
Language:English
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Summary:In order to examine the growth mechanism of a Bi2Sr2 CaCu2Oy (Bi2212) superconducting whisker, such elements as Ag, Pb, K, and Li were added to the Bi2212 powder in the molar ratio of 0.2 together with changes in sintering temperature. K addition and sintering temperature at 865 C achieved the fastest growth rate of the whisker. By varying the added elements, the diameter of whiskers is controllable. An Arrhenius plot of the growth rate of Bi2212 whiskers drew a straight line, indicating that its growth mechanism is correlated with the VLS growth mechanism. 4 refs.
ISSN:0921-4534
DOI:10.1016/S0921-4534(02)01401-6