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.
| 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 |
| Volume | 868 |
| 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 |
Other
| Other | 2005 MRS Spring Meeting |
|---|---|
| Country | United States |
| City | San Francisco, CA |
| Period | 05/3/28 → 05/4/1 |
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ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Control of Y2O3 nano-islands density to introduce artificial pinning centers in YBCO thin films. / Mele, Paolo; Matsumoto, K.; Horide, T.; Miura, O.; Ichinose, A.; Mukaida, M.; Yoshida, Y.; Horii, S.
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
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TY - GEN
T1 - Control of Y2O3 nano-islands density to introduce artificial pinning centers in YBCO thin films
AU - Mele, Paolo
AU - Matsumoto, K.
AU - Horide, T.
AU - Miura, O.
AU - Ichinose, A.
AU - Mukaida, M.
AU - Yoshida, Y.
AU - Horii, S.
PY - 2005/12/1
Y1 - 2005/12/1
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.
UR - http://www.scopus.com/inward/record.url?scp=34249943913&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34249943913&partnerID=8YFLogxK
M3 - Conference contribution
SN - 1558998225
SN - 9781558998223
VL - 868
SP - 109
EP - 114
BT - Recent Advances in Superconductivity
ER -