Effect of the Ag Additive on the <TEX>${Bi_{1.84}}{Pb_{0.34}}{Sr_{1.91}}{Ca_{2.03}}{Cu_{3.06}}{O_{10+delta}}$</TEX>(110K Phase) High-<TEX>$T_{c}$</TEX> Susperconductor

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J. Korean Ceram. Soc. > Volume 38(12); 2001 > Article

Journal of the Korean Ceramic Society 2001;38(12): 1104.

${Bi_{1.84}}{Pb_{0.34}}{Sr_{1.91}}{Ca_{2.03}}{Cu_{3.06}}{O_{10+delta}}$(110K 상) 산화물 고온초전도체에 미치는 Ag 혼합효과

이민수, 최봉수¹, 최봉수²

한밭대학교 두뇌한국 21사업단
¹한밭대학교 정보통신공학부
²한남대학교 이과대학 광·전자물리학과

Effect of the Ag Additive on the ${Bi_{1.84}}{Pb_{0.34}}{Sr_{1.91}}{Ca_{2.03}}{Cu_{3.06}}{O_{10+delta}}$(110K Phase) High-$T_{c}$ Susperconductor

ABSTRACT

Samples with the nominal composition, B $i_{1.84}$P $b_{0.34}$S $r_{1.91}$C $a_{2.03}$C $u_{3.06}$ $O_{10+}$$delta$/ high $T_{c}$ superconductors containing As as an additive were fabricated by a solid-state reaction method. Samples with Ag of 10wt%, 30 wt% and 50 wt% each were sintered at 86$0^{circ}C$~875$^{circ}C$ for 24 hours. The structural characteristics, critical temperature and grain size with respect to Ag contents were analyzed by XRD(X-ray Diffraction) and SEM(Scanning Electron Microscope), respectively. As Ag contents increased, XRD peaks of g in Bi-2223 phase superconductors intensified and the proportion of the phase transition from Bi-2223 to Bi-2212 was increased.increased.

Key words: High $T_c$ Superconductor, Bi-Pb-Sr-Ca-Cu-O(110 K), Ag Composite, SEM