| Autor: |
Uzumaki, Takuya, Yamanaka, Kazunori, Kamehara, Nobuo, Niwa, Koichi |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 5/29/1989, Vol. 54 Issue 22, p2253, 3p |
| Abstrakt: |
A high Tc phase (Tc [bar_over_tilde:_approx._equal_to]110 K) in Bi-Pb-Sr-Ca-Cu-O systems was synthesized by adding Ca2PbOx to the mixture of a low Tc phase (Tc [bar_over_tilde:_approx._equal_to]80 K) and a Bi-Sr-Cu-O (Tc [bar_over_tilde:_approx._equal_to]10 K). X-ray powder diffraction measurement suggests that the sintered bulk mainly consists of the high Tc phase. The volume fraction of the high Tc phase was 74% from the measurement of magnetization. The lower critical field Hc1 was 10 Oe at 77.3 K. The critical current density Jc of 3.0×102 A/cm2 was obtained for a repressed sample with a highly oriented microstructure. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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