| Autor: |
Zhaoshun Gao, Kouji Murakami, Nobuyuki Yoshida, Junichi Kinoshita, Tadahiro Akune, J. Ge, Baorong Ni, Masaru Kiuchi, Edmund Soji Otabe, Yanwei Ma, subaru Setoyama, Lei Wang, Nobuyoshi Sakamoto, Teruo Matsushita, Xianping Zhang, Yanpeng Qi |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Physica C: Superconductivity. 484:35-38 |
| ISSN: |
0921-4534 |
| DOI: |
10.1016/j.physc.2012.03.018 |
| Popis: |
AC susceptibilities (real χ ′ and imaginary χ ″) of Sr 0.6 K 0.4 Fe 2 As 2 (122 type) polycrystalline with Ag addition are analysed by the grained Bean model. A variety of characteristics, double peak in χ ″ and shoulder transition in χ ′, appear in the model simulation. Comparing the measured χ ′ and χ ″ with the model allows more clear insight on the polycrystalline structure. Estimated critical current densities J cg and J cl of the grain and the link in the iron-based pnictides show that the addition of 20 wt.% Ag increases J cl 9 times larger. Improvement of intergrain characteristics with Ag addition is clearly indicated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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