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| Zn^2＋掺杂的YBCO薄膜的超导性能研究 | |
| 引用本文： | 雷黎,赵高扬,徐慧.Zn^2＋掺杂的YBCO薄膜的超导性能研究[J].功能材料,2011,42(11). |
| 作者姓名： | 雷黎 赵高扬 徐慧 |
| 作者单位： | 1. 西安理工大学现代分析测试中心,陕西西安,710048 2. 西安理工大学现代分析测试中心,陕西西安710048／西安理工大学材料科学与工程学院,陕西西安710048 3. 西安理工大学材料科学与工程学院,陕西西安,710048 |
| 基金项目： | 国家自然科学基金资助项目(51072163); 高等学校博士学科点专项科研基金资助项目(20096118110002) |
| 摘 要： | 采用溶胶-凝胶法在LaAlO3（LAO）单晶衬底上制备了Zn^2＋掺杂的YBCO薄膜,用X射线衍射（XRD）、高分辨透射电子显微镜（HRTEM）以及标准四引线法分别研究了Zn^2＋掺杂的YBCO薄膜的微观结构、生长取向以及超导性能。结果表明,随Zn2＋掺杂浓度的增大薄膜的临界电流密度提高,而临界转变温度下降、临界转变温区变宽;但当掺杂量〉0.5%（摩尔分数）时,会影响YBCO的c轴取向生长,导致超导性能变差。通过优化掺杂比例后得到Zn2＋掺杂0.5%（摩尔分数）的YBCO薄膜具有最好的综合超导性能,其TC为91.3K,ΔT为1.1K,Jc约为1.54MA/cm^2（77K,0T）。 |
| 关 键 词： | YBCO薄膜 溶胶-凝胶法 涡旋钉扎 超导性能 |
Superconducting properties of Zn~(2+)-doped YBCO thin films |
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| LEI Li,ZHAO Gao-yang,XU Hui.Superconducting properties of Zn~(2+)-doped YBCO thin films[J].Journal of Functional Materials,2011,42(11). | |
| Authors: | LEI Li ZHAO Gao-yang XU Hui |
| Affiliation: | LEI Li1,ZHAO Gao-yang1,2,XU Hui2(1.Advanced Material Analysis and Test Center,Xi'an University of Technology,Xi'an 710048,China,2.School of Material Science and Engineering,China) |
| Abstract: | Zn2+-doped YBCO thin films were prepared on LaAlO3(LAO) single-crystal substrates by sol-gel process.The microstructure and growth orientation of the Zn2+-doped YBCO thin films were analyzed by X-ray diffraction(XRD) and transmission electron microscopy(TEM) respectively.The standard four-probe method was used to measure the superconducting properties of the pure and doped YBCO thin films.The results show that the critical current density Jc of the Zn2+-doped YBCO films was improved with the increase of Zn2... |
| Keywords: | YBCO films sol-gel method vortex pinning superconducting properties |
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