| 5d电子掺杂的SmFe_(1-x)Ir_xAsO铁基超导体的合成及物性 |
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| 引用本文： | 陈永亮,崔雅静,杨烨,王磊,李仪成,张勇,赵勇.5d电子掺杂的SmFe_(1-x)Ir_xAsO铁基超导体的合成及物性[J].低温物理学报,2010(2). |
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| 作者姓名： | 陈永亮 崔雅静 杨烨 王磊 李仪成 张勇 赵勇 |
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| 作者单位： | 磁浮技术与磁浮列车教育部重点实验室;西南交通大学超导研究开发中心; |
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| 基金项目： | 国家杰出青年基金(No .50588201);;国家基础研究项目(973)(No .2007CB616906);;国家教育部长江学者和创新团队发展计划(IRT0751);;西南交通大学博士生创新基金项目资助的课题~~ |
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| 摘 要： | 通过在SmFeAsO中Fe位上掺入5d过渡金属Ir,得到了一种新的铁基超导体SmFe1-xIrxAsO,当x=0.05时,样品表现出超导电性,超导转变温度为8K,当x=0.15时,超导转变温度达到最大值17.3K.X射线衍射结果表明所有样品均属四方ZrCuSiAs-type结构,SEM结果表明SmFe1-xIrxAsO样品具有片层状形貌特征.随着Ir掺杂量的增大,晶格参数a增大而c减小,结合EDX数据,表明Ir掺入了SmFeAsO晶格当中.
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| 关 键 词： | 铁基超导体 ZrCuSiAs结构 |
SYNTHESIS AND PROPERTIES OF 5D ELECTRON DOPED SMFE1-XIRXASO SUPERCONDUCTOR |
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| CHEN Yong-liang CUI Ya-jing YANG Ye WANG Lei LI Yi-cheng ZHANG Yong ZHAO Yong Key Laboratory of Magnetic Levitation Technologies , Maglev Trains,Ministry of Education of China, Superconductivity R&D Center ,Southwest Jiaotong University,Chengdu.SYNTHESIS AND PROPERTIES OF 5D ELECTRON DOPED SMFE1-XIRXASO SUPERCONDUCTOR[J].Chinese Journal of Low Temperature Physics,2010(2). |
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| Authors: | CHEN Yong-liang CUI Ya-jing YANG Ye WANG Lei LI Yi-cheng ZHANG Yong ZHAO Yong Key Laboratory of Magnetic Levitation Technologies Maglev Trains Ministry of Education of China Superconductivity R&D Center Southwest Jiaotong University Chengdu |
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| Abstract: | A new serious of iron-based superconductor SmFe1-xIrxAsO has been obtained by 5d transition metal Ir partially replacing Fe in SmFeAsO. The superconductivity emerges at 8 K with the Ir doping level x = 0.05. The superconducting transition shifts to higher temperatures with increasing Ir content,reaching a maximum value of 17.3 K at x = 0.15. X-ray Diffraction,SEM and EDX measurement were performed. The XRD patterns of all samples can be well indexed based on the tetragonal ZrCuSiAs-type structure,plate-like... |
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| Keywords: | iron-based superconductor ZrCuSiAs-type structure |
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