Critical Current Density Enhancement around a Matching Field in ErBa2Cu3O7-δ Films with BaZrO3 Nano-Rods
Critical Current Density Enhancement around a Matching Field in ErBa2Cu3O7-δ Films with BaZrO3 Nano-Rods
复制标题
BaZrO3 纳米棒增强 ErBa2Cu3O7-δ 薄膜匹配场周围的临界电流密度
DOI：
10.1143/jjap.44.l952
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发表时间：
2005
影响因子：
1.5
通讯作者：
N. Mori
中科院分区：
文献类型：
--
作者：
M. Mukaida;T. Horide;R. Kita;S. Horii;A. Ichinose;Y. Yoshida;O. Miura;K. Matsumoto;Kazuhiro Yamada;N. Mori
测量了含BaZrO_3纳米棒的高结晶质量ErBa2Cu3O7-δ薄膜的临界电流密度的场角关系。观察到了较大的临界电流密度提高。观察到增强的磁场与由BaZrO_3纳米棒密度计算的匹配场一致。在ErBa2Cu3O7-∥薄膜的B-δc轴上观察到最大的增强。这种各向异性的临界电流密度增强被认为是由沿薄膜c轴生长的BaZrO_3纳米棒的方向引起的。薄膜中的BaZrO_3纳米棒有望使镀膜导体在磁场中得到应用。
Field angular dependences of critical current density are measured for as-grown high crystalline quality ErBa2Cu3O7-δ films with BaZrO3 nano-rods. Large critical current density enhancement is observed. The magnetic field where the enhancement is observed coincides with the matching field calculated from the density of BaZrO3 nano-rods. The largest enhancement is observed in B ∥c-axis of ErBa2Cu3O7-δ films. This anisotropic critical current density enhancement is thought to be caused by the direction of BaZrO3 nano-rods which grow along the c-axis of the films. BaZrO3 nano-rods in the films will promise the application of coated conductors in a magnetic field.