Relationship between Carrier Concentration and Superconducting Transition Temperature in Bi-Sr-Ca-Cu-O Superconductor

Kim, Myung Chul; Park, Soon Ja

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.5, No.2

PubReader Citation

Relationship between Carrier Concentration and Superconducting Transition Temperature in Bi-Sr-Ca-Cu-O Superconductor

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1992, v.5 no.2, pp.223-228

Kim, Myung Chul
Park, Soon Ja

Kim, M. C., & Park, S. J. (1992). Relationship between Carrier Concentration and Superconducting Transition Temperature in Bi-Sr-Ca-Cu-O Superconductor. , 5(2), 223-228.

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Abstract

$Bi_2Sr_2Ca_2Cu_3Oy$-based superconductor phases were synthesized by the wet process using acetate precursors. Superconducting transition temperature ($T_c$) was determined from both measurements of electrical resistivity and magnetic susceptibility for the samples which were sintered at the temperatures of $850^{\circ}C$, $860^{\circ}C$, and $870^{\circ}C$ for 40 hours, respectively. The values of carrier concentration from Hall measurements were compared with $T_c$ data as a function of the sintering temperature. The formation mechanism of the superconducting phase was tentatively discussed on a basis of the distribution profile concept of the carrier concentration and the amount of superconducting phases in a ceramic bulk. This explanation may be supported by the experimental results of correlation between the relative amount of superconducting phases and the difference of $T_c$ values between superconducting onset temperature and cutoff temperature at each sintering temperature.