抄録
AC susceptibility and DC magnetization relaxation measurements have been performed for YBa2Cu3O7 films containing BaZrO3 nanorods preferentially oriented along the c axis, with the external magnetic field perpendicular to the film surface. It was found that the effective vortex activation energy Ue supplied by the standard analysis of the frequency dependent AC magnetic response remains very high even in the vicinity of the irreversibility line indicated by the DC relaxation. We show that the large Ue values appearing in the AC signal are related to the pinning enhanced viscous drag and significant vortex velocities.
本文言語 | English |
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ページ(範囲) | 361-365 |
ページ数 | 5 |
ジャーナル | Journal of Superconductivity and Novel Magnetism |
巻 | 28 |
号 | 2 |
DOI | |
出版ステータス | Published - 2014 1月 1 |
外部発表 | はい |
ASJC Scopus subject areas
- 電子材料、光学材料、および磁性材料
- 凝縮系物理学