抄録
In this work we report experimental results concerning the influence of potassium and excess copper additions on the AC complex susceptibility and microstructural development within polycrystalline YBCO high-temperature superconductors with nominal composition Y1-0.2xBa2-0.2xKxCu3Oy (x = 0-1.20). The real (X′) and the imaginary (X″) parts of the complex magnetic susceptibility of YBCO were recorded as a function of the temperature at various magnetic fields up to 10 Oe. From these data the intergranular critical current densities were calculated using Bean's critical state model. A proper concentration x, which is approximately equal to x = 0.40 in the initial Y1-0.2xBa2-0.2xKxCu3Oy batch was found to improve the Josephson coupling between the grains.
本文言語 | English |
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ページ(範囲) | 230-234 |
ページ数 | 5 |
ジャーナル | Physica C: Superconductivity and its applications |
巻 | 271 |
号 | 3-4 |
DOI | |
出版ステータス | Published - 1996 11月 10 |
外部発表 | はい |
ASJC Scopus subject areas
- 電子材料、光学材料、および磁性材料
- 凝縮系物理学
- エネルギー工学および電力技術
- 電子工学および電気工学