%0 Journal Article
%T Magnetization study of ITER-type internal-Sn Nb3Sn superconducting wire
%A Zhang Chao-Wu
%A Zhou Lian
%A Andre Sulpice
%A Jean-Louis Soubeyroux
%A Christophe Verwaerde
%A Gia Ky Hoang
%A Zhang Ping-Xiang
%A Lu Ya-Feng
%A Tang Xian-De
%A <br>张超武
%A 周廉
%A AndreSulpice
%A Jean-LouisSoubeyroux
%A ChristopheVerwaerde
%A GiaKyHoang
%A 张平祥
%A 卢亚峰
%A 唐先德
%J 中国物理 B
%D 2007
%I 
%X Through magnetization measurement with a SQUID magnetometer the heat treatment optimization of an international thermonuclear experimental reactor (ITER)-type internal-Sn Nb$_{3}$Sn superconducting wire has been investigated. The irreversibility temperature $T^*(H)$, which is mainly dependent on A15 phase composition, was obtained by a warming and cooling cycle at a fixed field. The hysteresis width $\Delta M(H)$ which reflects the flux pinning situation of the A15 phase is determined by the sweeping of magnetic field at a constant temperature. The results obtained from differently heat-treated samples show that the combination of $T^*(H)$ with $\Delta M(H)$ measurement is very effective for optimizing the heat reaction process. The heat treatment condition of the ITER-type wire is optimized at 675$\,^\circ$C/128~h, which results in a composition closer to stoichiometric Nb$_{3}$Sn and a state with best flux pinning.
%K Nb3Sn superconducting wire
%K internal-Sn process
%K irreversibility temperature
%K hysteresis width<br>超导线
%K Nb3Sn
%K 磁化测量
%K 磁滞现象
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=51EC29F0F1FE4796885D6D33E83D6A99&yid=A732AF04DDA03BB3&vid=7801E6FC5AE9020C&iid=B31275AF3241DB2D&sid=961EEFF36C7AED30&eid=DF28BAAD0FD19027&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=5