| 预处理柠檬酸对MgB2块材掺杂的影响 |
| |
| 引用本文： | 王雅真,杨烨,李仪成,王磊,孙辉辉,张勇,赵勇. 预处理柠檬酸对MgB2块材掺杂的影响[J]. 低温物理学报, 2011, 0(1): 5-9 |
| |
| 作者姓名： | 王雅真 杨烨 李仪成 王磊 孙辉辉 张勇 赵勇 |
| |
| 作者单位： | 材料先进技术教育部重点实验室西南交通大学超导研究开发中心; |
| |
| 基金项目： | 国家自然科学基金(批准号:50588201,50872116); 国家高科技项目(863)(批准号:2007AA03Z203); 高等学校博士点专项科研基金(批准号:SRFDP200806130023); 长江学者与创新团队计划(批准号:IRT0751); 中央高校基本科研业务费专项资金(批准号:SWJTU09ZT24,SWJ-TU09CX055,2009QK45); 西南交大科技发展基金和西南交大博士创新基金资助的课题~~ |
| |
| 摘 要： | 本文介绍了预处理柠檬酸(C6H8O7)掺杂对MgB2超导体的影响.通过该实验我们将柠檬酸中的一部分氧元素除去,降低了样品中MgO的含量,从而有效减轻了杂质相对超导转变温度(Tc)的抑制.另外,还发现样品的临界电流密度(Jc)在处理温度为200℃时达到最优值.在10K,4T条件下,200℃预处理的样品的Jc达到1.4×1...
|
| 关 键 词： | MgB2 预处理温度 临界电流密度 |
EFFECTS OF PRETREATED CITRIC ACID DOPING ONMgB_2 BULKS |
| |
| WANG Ya-zhen YANG Ye LI Yi-cheng WANG Lei SUN Hui-hui C.H.Cheng ZHANG Yong ZHAO Yong Key Laboratory of Advanced Technology of Materials,Ministry of EducationSuperconductivity R&D Center,MailStopJHJ,Southwest Jiaotong University,Chengdu. EFFECTS OF PRETREATED CITRIC ACID DOPING ONMgB_2 BULKS[J]. Chinese Journal of Low Temperature Physics, 2011, 0(1): 5-9 |
| |
| Authors: | WANG Ya-zhen YANG Ye LI Yi-cheng WANG Lei SUN Hui-hui C.H.Cheng ZHANG Yong ZHAO Yong Key Laboratory of Advanced Technology of Materials Ministry of EducationSuperconductivity R&D Center MailStopJHJ Southwest Jiaotong University Chengdu |
| |
| Affiliation: | WANG Ya-zhen YANG Ye LI Yi-cheng WANG Lei SUN Hui-hui C.H.Cheng ZHANG Yong ZHAO Yong Key Laboratory of Advanced Technology of Materials,Ministry of EducationSuperconductivity R&D Center,MailStop165JHJ,Southwest Jiaotong University,Chengdu 610031 |
| |
| Abstract: | This paper introduces the effects of pretreated citric acid doping on MgB2 bulks.In the experiment,we remove a part of oxygen in the citric acid and thus reduce the content of MgO in the sample,so that the depression on Tc is effectively relieved.In addition,we find that the critical current density (Jc) of MgB2 achieves an optimal value when the processing temperature is (set to be) 200℃.At this temperature,Jcreaches 1.4×104A/cm2,at 4T and 10K,with is 75% raise,compared with a Jc of 0.8×104A/cm2 when the sample is pure. |
| |
| Keywords: | MgB2 pretreatment temperature the critical current density |
| 本文献已被 CNKI 等数据库收录！ |
|
