Control of Y2O3 nano-islands density to introduce artificial pinning centers in YBCO thin films

P. Mele, K. Matsumoto, T. Horide, O. Miura, A. Ichinose, M. Mukaida, Y. Yoshida, S. Horii

研究成果: Conference contribution

抜粋

We successfully introduced high-density linear defects as artificial pinning centers (APCs) of the quantized vortices into YBCO films, during the film deposition procedure. APCs were introduced perpendicular to the film surface by using the distributed nano-sized Y2O3 islands prepared on SrTiO3(100) substrates. It is possible to induce strong changes on the shape and density of the Y2O3 islands by varying the deposition and annealing conditions. The highest Y2O 3 islands density, 226/μm2, was obtained with fifteen laser pulses at 800°C of substrate temperature, and applying an annealing temperature of 800°C. Even if only a small fraction of the induced defects act as effective pinning centers, Jc of YBCO film grown on the Y 2O3 nanoislands/SrTiO3 substrate increased to 1.8 × 107 A/cm2 (20 K, B//c, 0 T), which is 1.5 times higher than that of the pure YBCO film.

元の言語English
ホスト出版物のタイトルRecent Advances in Superconductivity
ホスト出版物のサブタイトルMaterials Synthesis, Multiscale Characterization, and Functionally Layered Composite Conductors
ページ109-114
ページ数6
出版物ステータスPublished - 2005 12 1
イベント2005 MRS Spring Meeting - San Francisco, CA, United States
継続期間: 2005 3 282005 4 1

出版物シリーズ

名前Materials Research Society Symposium Proceedings
868
ISSN(印刷物)0272-9172

Other

Other2005 MRS Spring Meeting
United States
San Francisco, CA
期間05/3/2805/4/1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

フィンガープリント Control of Y<sub>2</sub>O<sub>3</sub> nano-islands density to introduce artificial pinning centers in YBCO thin films' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Mele, P., Matsumoto, K., Horide, T., Miura, O., Ichinose, A., Mukaida, M., Yoshida, Y., & Horii, S. (2005). Control of Y2O3 nano-islands density to introduce artificial pinning centers in YBCO thin films. : Recent Advances in Superconductivity: Materials Synthesis, Multiscale Characterization, and Functionally Layered Composite Conductors (pp. 109-114). (Materials Research Society Symposium Proceedings; 巻数 868).