| 名义组分为Y_6Ba_(11)Cu_(16)O_x的纳米超导材料 |
| |
| 引用本文： | 胡婧婧,孙爱民,鲁彦忠,刘恒伟,马耀通.名义组分为Y_6Ba_(11)Cu_(16)O_x的纳米超导材料[J].低温与超导,2011,39(6). |
| |
| 作者姓名： | 胡婧婧 孙爱民 鲁彦忠 刘恒伟 马耀通 |
| |
| 作者单位： | 西北师范大学物理与电子工程学院;甘肃省原子分子物理与功能材料重点实验室; |
| |
| 摘 要： | 采用柠檬酸盐热分解法制备了名义组分为Y6Ba11Cu16Ox的纳米超导材料。利用XRD对其粉体进行物相表征,发现其相是Y123和Y211的混合相,并测得两者之间的摩尔比为1∶0.14,同时把其XRD图谱与Y1Ba2Cu3O7-x的XRD图谱进行了对照分析。利用标准的四端引线法对其块体进行R-T分析,测出其起始转变温度Tonset=86.0K,转变宽度△Tc=6.7K,并表现出良好的超导电性,也相应地把其与Y1Ba2Cu3O7-x进行了对比。根据Scherrer公式计算得到样品的平均晶粒尺寸约为67.1nm。文中也分析了所制材料为混合物的原因。
|
| 关 键 词： | 氧化物超导体 纳米材料 柠檬酸盐热分解法 |
Preparation of nanoscale nominal characteristics Y_6Ba_(11)Cu_(16)O_x superconductor material by the citrate pyrolysis method |
| |
| Hu Jingjing,Sun Aimin,Lu Yanzhong,Liu Hengwei,Ma Yaotong.Preparation of nanoscale nominal characteristics Y_6Ba_(11)Cu_(16)O_x superconductor material by the citrate pyrolysis method[J].Cryogenics and Superconductivity,2011,39(6). |
| |
| Authors: | Hu Jingjing Sun Aimin Lu Yanzhong Liu Hengwei Ma Yaotong |
| |
| Institution: | Hu Jingjing1,Sun Aimin1,2,Lu Yanzhong1,Liu Hengwei1,Ma Yaotong1,2 (1.College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,China,2.Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province,China) |
| |
| Abstract: | Nanoscale nominal characteristics Y6Ba11Cu16Ox superconductor material was prepared using the citrate pyrolysis method.The morphology and structure of the nanoscale products were characterized by X-ray diffraction.The results indicate that the briquetting has Y123 and Y211 phase.We found that the ratio of Y123 and Y211 was 1∶0.14 in moles,and we compared the XRD with the XRD of Y1Ba2Cu3O7-x.The Tonset was 86.0K and the ΔTc was 6.7K,which was examined by normal four terminals method.It represented good superconductivity,and we compared it with Y1Ba2Cu3O7-x.The mean grain's size was about 67.1nm,which was calculated by the Scherrer's equation.The paper also analyzed the fabricated materials for a mixture of reason. |
| |
| Keywords: | Oxide superconductor Nanoscale material Citrate pyrolysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
