Vortex pinning at low temperature under high magnetic field in SmBa2Cu3Oy superconducting films with high number density and small size of BaHfO3 nano-rods

S. Miura, Y. Yoshida, Y. Ichino, A. Tsuruta, K. Matsumoto, A. Ichinose, S. Awaji

研究成果: Article査読

16 被引用数 (Scopus)

抄録

We have fabricated 5.6 vol.% BaHfO3 (BHO)-doped SmBa2Cu3Oy (SmBCO) films at a low substrate temperature of 750�C by using the low temperature growth (LTG) technique with a seed layer. Using the LTG technique, we can obtain a purely c-axis oriented SmBCO film even at low growth temperatures. The LTG technique also greatly increases the number density of BHO nanorods. The size and matching field of the BHO nanorods in the films were 5.4 nm and 9.9 T. Transport measurements were carried out, and a high irreversibility field (B irr) and strong flux pinning force density (F p) were obtained. The B irr was 15.1 T at 77 K for B//c. The maximum F p of 407 GN m-3 in 10 T at 40 K and 770 GN m-3 from 9 to 17 T at 20 K have been measured. We believe that the LTG technique can be considered as important for improving of flux pinning performance in BaMO3 (BMO: M= Zr, Sn and Hf)-doped SmBCO coated conductors.

本文言語English
論文番号114006
ジャーナルSuperconductor Science and Technology
28
11
DOI
出版ステータスPublished - 2015 10 7

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

フィンガープリント 「Vortex pinning at low temperature under high magnetic field in SmBa<sub>2</sub>Cu<sub>3</sub>O<sub>y</sub> superconducting films with high number density and small size of BaHfO<sub>3</sub> nano-rods」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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