| Mg가 혼합된 Bi(Pb)SrCaCuO(110 K 상) 고온초전도체의 미세구조에 따른 초전도 특성 변화에 대한 연구 |
| 이정화, 최봉수1, 이민수2 |
한밭대학교 교양과정부
1한밭대학교 정보통신·컴퓨터공학부
2한밭대학교 환경보전방재연구소 |
| Superconducting Properties of the Mg-Bi(Pb)SrCaCuO (110 K Phase) Composite System focusing on the Microstructure |
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| ABSTRACT |
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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$/ (110 K phase) high $T_{C}$ superconductors containing MgO as an additive were fabricated by a solid-state reaction method. Samples with 5~50 wt％ MgO were sintered at 820~86$0^{circ}C$ for 24 h. The structural characteristics, critical temperature and grain size of the samples with different MgO contents were analyzed by XRD and SEM. As the MgO content increased, the intensity of MgO peaks and ratio of Bi-2212 phase in superconductors were intensified and the proportion of the phase transition from Bi-2223 to Bi-2212 was increased.d.creased.d. |
| Key words:
$High-T_{c}$ superconductor, Bi_b-Sr-Ca-Cu-O(110 K), MgO composite, SEM micrographs |
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