Irreversibility field and flux pinning in MgB2 with and without SiC additions
Irreversibility field and flux pinning in MgB2 with and without SiC additions
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DOI：
10.1088/0953-2048/17/10/017
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发表时间：
2004-10
影响因子：
3.6
通讯作者：
M. Sumption;M. Bhatia;S. X. Dou;M. Rindfliesch;M. Tomsic;Lutfi Arda;Mustafa Özdemir;Y. Hascicek-Y.
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文献类型：
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作者：
M. Sumption;M. Bhatia;S. X. Dou;M. Rindfliesch;M. Tomsic;Lutfi Arda;Mustafa Özdemir;Y. Hascicek-Y.
临界电流密度（Jc）测定在4.2？K用于添加和不添加SiC的MgB2股线。在某些情况下，测量进行长（1？m）缠绕在桶上的样品，将运输结果与磁性测量结果进行比较。大多数测量进行了短样品的领域高达18？T.有人发现，在？原位处理股10%碳化硅添加热处理在700？八百？C表现出改善的不可逆领域（Hr）和散装钉扎强度（FP）相比，对照样品，增加Hr的1.5？T被注意到了。热处理至900？C给出了更大的改进，Hr达到18？T和Fp值最大化在20？GN？你好吗？3.
The critical current density (Jc) was measured at 4.2?K for MgB2 strands with and without SiC additions. In some cases measurements were performed on long (1?m) samples wound on barrels, the transport results being compared to the results of magnetic measurements. Most measurements were performed on short samples in fields of up to 18?T. It was found that in?situ processed strands with 10% SiC additions heat treated at 700?800??C showed improved irreversibility fields (Hr) and bulk pinning strengths (Fp) as compared to control samples; an increase in Hr of 1.5?T was noted. Heat treatment to 900??C gave even larger improvements, with Hr reaching 18?T and Fp values maximizing at 20?GN?m?3.