Abstract
A multilayer alternately stacked a-axis oriented YBa 2 Cu 3 O 7-δ and PrBa 2 Cu 3 O 7-δ (Y123/Pr123 multilayer) has been grown on a SrLaGaO 4 substrate with a Gd 2 CuO 4 buffer layer by pulsed laser deposition. We used an Y123 target that contains a Pr123 sector for obtaining the Y123/Pr123 multilayer. The multilayer structure of the obtained film was confirmed by a transmission electron microscope. In magnetic field (B) angular dependences of critical current density (J C ) (J C -B-θ curves), J C peaks were observed at B∥a-axis and B∥c-axis of the Y123/Pr123 multilayer. Peaks at B∥c-axis are absent in J C -B-θ curves of pure a-axis oriented Y123 films. Therefore, peaks at B∥c-axis in J C -B-θ curves of the Y123/Pr123 multilayer are attributed to Pr123 layers. This result indicates that the Y123/Pr123 multilayer has c-axis-correlated pinning centers. Consequently, it is concluded that Pr123 layers work as two-dimensional artificial pinning centers with the current direction along the b-axis.
| Original language | English |
|---|---|
| Pages (from-to) | 904-908 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 463-465 |
| Issue number | SUPPL. |
| DOIs | |
| Publication status | Published - Oct 1 2007 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Cite this
A new approach to a two-dimensional artificial pinning center. / Takamura, M.; Mukaida, Masashi; Shingai, Y.; Teranishi, Ryo; Yamada, K.; Mori, N.; Horii, S.; Ichinose, A.; Kita, R.; Kato, S.; Matsumoto, K.; Yoshida, Y.
In: Physica C: Superconductivity and its applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 904-908.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A new approach to a two-dimensional artificial pinning center
AU - Takamura, M.
AU - Mukaida, Masashi
AU - Shingai, Y.
AU - Teranishi, Ryo
AU - Yamada, K.
AU - Mori, N.
AU - Horii, S.
AU - Ichinose, A.
AU - Kita, R.
AU - Kato, S.
AU - Matsumoto, K.
AU - Yoshida, Y.
PY - 2007/10/1
Y1 - 2007/10/1
N2 - A multilayer alternately stacked a-axis oriented YBa 2 Cu 3 O 7-δ and PrBa 2 Cu 3 O 7-δ (Y123/Pr123 multilayer) has been grown on a SrLaGaO 4 substrate with a Gd 2 CuO 4 buffer layer by pulsed laser deposition. We used an Y123 target that contains a Pr123 sector for obtaining the Y123/Pr123 multilayer. The multilayer structure of the obtained film was confirmed by a transmission electron microscope. In magnetic field (B) angular dependences of critical current density (J C ) (J C -B-θ curves), J C peaks were observed at B∥a-axis and B∥c-axis of the Y123/Pr123 multilayer. Peaks at B∥c-axis are absent in J C -B-θ curves of pure a-axis oriented Y123 films. Therefore, peaks at B∥c-axis in J C -B-θ curves of the Y123/Pr123 multilayer are attributed to Pr123 layers. This result indicates that the Y123/Pr123 multilayer has c-axis-correlated pinning centers. Consequently, it is concluded that Pr123 layers work as two-dimensional artificial pinning centers with the current direction along the b-axis.
AB - A multilayer alternately stacked a-axis oriented YBa 2 Cu 3 O 7-δ and PrBa 2 Cu 3 O 7-δ (Y123/Pr123 multilayer) has been grown on a SrLaGaO 4 substrate with a Gd 2 CuO 4 buffer layer by pulsed laser deposition. We used an Y123 target that contains a Pr123 sector for obtaining the Y123/Pr123 multilayer. The multilayer structure of the obtained film was confirmed by a transmission electron microscope. In magnetic field (B) angular dependences of critical current density (J C ) (J C -B-θ curves), J C peaks were observed at B∥a-axis and B∥c-axis of the Y123/Pr123 multilayer. Peaks at B∥c-axis are absent in J C -B-θ curves of pure a-axis oriented Y123 films. Therefore, peaks at B∥c-axis in J C -B-θ curves of the Y123/Pr123 multilayer are attributed to Pr123 layers. This result indicates that the Y123/Pr123 multilayer has c-axis-correlated pinning centers. Consequently, it is concluded that Pr123 layers work as two-dimensional artificial pinning centers with the current direction along the b-axis.
UR - http://www.scopus.com/inward/record.url?scp=34548502747&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548502747&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2007.04.274
DO - 10.1016/j.physc.2007.04.274
M3 - Article
AN - SCOPUS:34548502747
VL - 463-465
SP - 904
EP - 908
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - SUPPL.
ER -