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

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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, J_c 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.

Original language	English
Title of host publication	Recent Advances in Superconductivity
Subtitle of host publication	Materials Synthesis, Multiscale Characterization, and Functionally Layered Composite Conductors
Pages	109-114
Number of pages	6
Publication status	Published - 2005 Dec 1
Externally published	Yes
Event	2005 MRS Spring Meeting - San Francisco, CA, United States Duration: 2005 Mar 28 → 2005 Apr 1

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	868
ISSN (Print)	0272-9172

Other

Other	2005 MRS Spring Meeting
Country/Territory	United States
City	San Francisco, CA
Period	05/3/28 → 05/4/1

ASJC Scopus subject areas

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

Cite this

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. In Recent Advances in Superconductivity: Materials Synthesis, Multiscale Characterization, and Functionally Layered Composite Conductors (pp. 109-114). (Materials Research Society Symposium Proceedings; Vol. 868).

Control of Y₂O₃ nano-islands density to introduce artificial pinning centers in YBCO thin films. / Mele, P.; Matsumoto, K.; Horide, T. et al.

Recent Advances in Superconductivity: Materials Synthesis, Multiscale Characterization, and Functionally Layered Composite Conductors. 2005. p. 109-114 (Materials Research Society Symposium Proceedings; Vol. 868).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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. in Recent Advances in Superconductivity: Materials Synthesis, Multiscale Characterization, and Functionally Layered Composite Conductors. Materials Research Society Symposium Proceedings, vol. 868, pp. 109-114, 2005 MRS Spring Meeting, San Francisco, CA, United States, 05/3/28.

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

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abstract = "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.",

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AB - 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.

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