Magnetic property improvement of niobium doped with rare earth elements  

作　　者：江涛 贺斐思 焦飞 何法 鲁向阳 赵夔 赵红运 游雨松 陈林 

机构地区：[1]State Key Laboratory of Nuclear Physics and Technology,Peking University [2]Ningxia Orient Tantalum Industry Co.,Ltd.

出　　处：《Chinese Physics B》2014年第5期542-546,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11175008)

摘　　要：A new idea is proposed by the PKU group to improve the magnetic properties of the Type-Ⅱ superconductor niobium. Rare earth elements like scandium and yttrium are doped into ingot niobium during the smelting processes. A series of experiments have been done since 2010. The preliminary testing results show that the magnetic properties of niobium materials have changed with different doping elements and proportions while the superconductive transition temperature does not change very much. This method may increase the superheating magnetic field of niobium so as to improve the performance of the niobium cavity, which is a key component of SRF accelerators. A Tesla-type single-cell cavity made of scandium-doped niobium is being fabricated.A new idea is proposed by the PKU group to improve the magnetic properties of the Type-Ⅱ superconductor niobium. Rare earth elements like scandium and yttrium are doped into ingot niobium during the smelting processes. A series of experiments have been done since 2010. The preliminary testing results show that the magnetic properties of niobium materials have changed with different doping elements and proportions while the superconductive transition temperature does not change very much. This method may increase the superheating magnetic field of niobium so as to improve the performance of the niobium cavity, which is a key component of SRF accelerators. A Tesla-type single-cell cavity made of scandium-doped niobium is being fabricated.

关 键 词：NIOBIUM rare earth element IMPURITY magnetization curve 

分 类 号：O482.5[理学—固体物理]