2024-03-28T13:48:49Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00028395
2023-01-16T04:21:02Z
320:321:322
In-Plane Anisotropy of Transport Property in BaTbO3-Doped SmBa2Cu3Oy Films
Kato, Hiroki
92906
Tsuchiya, Yuji
92907
Ichino, Yusuke
92908
Ichinose, Ataru
92909
Yoshida, Yutaka
92910
Artificial pinning centers
BaTbO3
critical current density
high fields
high temperature superconductor
in-plane anisotropy
nanorod
SmBa2Cu3Oy
BaTbO3 (BTbO) is one of artificial pinning center materials and forms thick rectangular nanorods with diameters of ~20 nm when it is doped high. We expected that the rectangular na-norods would produce in-plane anisotropy of flux pinning. In this study, we investigated in-plane anisotropy of transport properties in BTbO-doped SmBa2Cu3Oy (SmBCO) films. SmBCO thin films with various contents of BTbO were fabricated by using a pulsed laser deposition method. To investigate the in-plane anisotropy, the critical current density Jc was measured at 77 K, 0-9 T, and Φ = 0° and 45°, where Φ was defined as an in-plane angle from the a or b-axes of SmBCO. To fix the direction of current in the films, the micro-bridges were fabricated with different Φ = 0° and 45°) by using the laser etching technique. As a result, Jc at Φ = 0° was higher than one at Φ = 45° in the films with BTbO contents of 12.0 and 20.0 vol.% at 77 K and at fields of 5 T or more. The anisotropy of Jc in high fields for current directions was possibly explained by the rectangular shape of the BTbO nanorods.
journal article
IEEE
2019-08
application/pdf
IEEE Transactions on Applied Superconductivity
5
29
1
4
1051-8223
1558-2515
https://nagoya.repo.nii.ac.jp/record/28395/files/3MPo1C-02_Hiroki Kato_FINAL_VERSION.pdf
eng
https://doi.org/10.1109/TASC.2019.2906468
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