The 78th JSAP Autumn Meeting, 2017

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11 Superconductivity » 11.3 Critical Current, Superconducting Power Applications

[6p-S42-1~18] 11.3 Critical Current, Superconducting Power Applications

Wed. Sep 6, 2017 1:15 PM - 6:00 PM S42 (Conf. Room 2)

Masaru Kiuchi(Kyushu Inst. Tech.), Takumi Suzuki(Kyushu Univ.)

1:30 PM - 1:45 PM

[6p-S42-2] Effect of nanoprecipitate size on the flux pinning of YBCO thin films (2)—calculation of pinning force density Fp based on the direct summation of elementary pinning forces

〇Hirofumi Yamasaki1, Hiroshi Yamada2 (1.AIST, 2.Nat. Inst. Tech., Oshima Col.)

Keywords:YBCO thin films, flux pinning, nano precipitates

In the previous report we found that the change of critical current density Jc(T) is more remarkable for the YBCO thin film with smaller nanoparticles. In this report we explain the origin of the phenomena by calculating the flux-pinning force density Fp and Jc from the direct summation of elementary pinning forces fp. We also discuss the validity of the direct summation model.