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; Masashi 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, Masashi 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: Materials Synthesis, Multiscale Characterization, and Functionally Layered Composite Conductors
Pages	109-114
Number of pages	6
Volume	868
Publication status	Published - 2005
Externally published	Yes
Event	2005 MRS Spring Meeting - San Francisco, CA, United States Duration: Mar 28 2005 → Apr 1 2005

Other

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

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials

Cite this

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. Vol. 868 2005. p. 109-114.

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. vol. 868, pp. 109-114, 2005 MRS Spring Meeting, San Francisco, CA, United States, 3/28/05.

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

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.",

author = "P. Mele and K. Matsumoto and T. Horide and O. Miura and A. Ichinose and Masashi Mukaida and Y. Yoshida and S. Horii",

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note = "2005 MRS Spring Meeting ; Conference date: 28-03-2005 Through 01-04-2005",

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AU - Mele, P.

AU - Matsumoto, K.

AU - Horide, T.

AU - Miura, O.

AU - Ichinose, A.

AU - Mukaida, Masashi

AU - Yoshida, Y.

AU - Horii, S.

PY - 2005

Y1 - 2005

N2 - 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.

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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SN - 9781558998223

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BT - Recent Advances in Superconductivity: Materials Synthesis, Multiscale Characterization, and Functionally Layered Composite Conductors

T2 - 2005 MRS Spring Meeting

Y2 - 28 March 2005 through 1 April 2005

ER -

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

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