Abstract
Ba complex oxides such as BaMO3 (BMO, M = Zr and Sn) were incorporated into ErBa2Cu3O7-δ (ErBCO) films on SrTiO3 (STO) substrates for realizing higher critical current densities (Jc) in magnetic fields. Nanorods of BMO were formed in the ErBCO films with the rod diameter of about 10-20 nm. Crystal grain alignment of both ErBCO films with BZO and BSO were found to be worse with increasing the doping concentration of BMO into the films, resulting in critical temperature (Tc) degradation for the ErBCO films. Jc of the ErBCO films were enhanced by the corporation of these BMO nanorods in the magnetic fields (B) applied particularly parallel to the c-axis (B//c). Additionally, it was observed that the Jc values of the ErBCO films with BSO were higher than those of ErBCO films with BZO in the all measured magnetic fields (B//c), which indicated that the BSO nanorods acted as more effective pinning centers in ErBCO films. Extremely high Jc of 0.41 MA/cm2 was performed for the ErBCO film with BSO of 4.9 mol% in the magnetic field (B//c) of 3 T. We concluded that not only the decision of pinning materials, but also optimization of the three factors of crystallinity of the superconducting film, Tc of the superconducting film, and doping concentration of the pinning materials into the superconducting film were important to realize higher Jc in a magnetic field.
| Original language | English |
|---|---|
| Pages (from-to) | 1522-1526 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 468 |
| Issue number | 15-20 |
| DOIs | |
| Publication status | Published - Sep 15 2008 |
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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
Superconducting properties of ErBCO films with BaMO3 nanorods (M = Zr and Sn) by pulsed laser deposition. / Teranishi, Ryo; Yasunaga, S.; Kai, H.; Yamada, K.; Mukaida, Masashi; Mori, N.; Fujiyoshi, T.; Ichinose, A.; Horii, S.; Matsumoto, K.; Yoshida, Y.; Kita, R.; Awaji, S.
In: Physica C: Superconductivity and its applications, Vol. 468, No. 15-20, 15.09.2008, p. 1522-1526.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Superconducting properties of ErBCO films with BaMO3 nanorods (M = Zr and Sn) by pulsed laser deposition
AU - Teranishi, Ryo
AU - Yasunaga, S.
AU - Kai, H.
AU - Yamada, K.
AU - Mukaida, Masashi
AU - Mori, N.
AU - Fujiyoshi, T.
AU - Ichinose, A.
AU - Horii, S.
AU - Matsumoto, K.
AU - Yoshida, Y.
AU - Kita, R.
AU - Awaji, S.
PY - 2008/9/15
Y1 - 2008/9/15
N2 - Ba complex oxides such as BaMO3 (BMO, M = Zr and Sn) were incorporated into ErBa2Cu3O7-δ (ErBCO) films on SrTiO3 (STO) substrates for realizing higher critical current densities (Jc) in magnetic fields. Nanorods of BMO were formed in the ErBCO films with the rod diameter of about 10-20 nm. Crystal grain alignment of both ErBCO films with BZO and BSO were found to be worse with increasing the doping concentration of BMO into the films, resulting in critical temperature (Tc) degradation for the ErBCO films. Jc of the ErBCO films were enhanced by the corporation of these BMO nanorods in the magnetic fields (B) applied particularly parallel to the c-axis (B//c). Additionally, it was observed that the Jc values of the ErBCO films with BSO were higher than those of ErBCO films with BZO in the all measured magnetic fields (B//c), which indicated that the BSO nanorods acted as more effective pinning centers in ErBCO films. Extremely high Jc of 0.41 MA/cm2 was performed for the ErBCO film with BSO of 4.9 mol% in the magnetic field (B//c) of 3 T. We concluded that not only the decision of pinning materials, but also optimization of the three factors of crystallinity of the superconducting film, Tc of the superconducting film, and doping concentration of the pinning materials into the superconducting film were important to realize higher Jc in a magnetic field.
AB - Ba complex oxides such as BaMO3 (BMO, M = Zr and Sn) were incorporated into ErBa2Cu3O7-δ (ErBCO) films on SrTiO3 (STO) substrates for realizing higher critical current densities (Jc) in magnetic fields. Nanorods of BMO were formed in the ErBCO films with the rod diameter of about 10-20 nm. Crystal grain alignment of both ErBCO films with BZO and BSO were found to be worse with increasing the doping concentration of BMO into the films, resulting in critical temperature (Tc) degradation for the ErBCO films. Jc of the ErBCO films were enhanced by the corporation of these BMO nanorods in the magnetic fields (B) applied particularly parallel to the c-axis (B//c). Additionally, it was observed that the Jc values of the ErBCO films with BSO were higher than those of ErBCO films with BZO in the all measured magnetic fields (B//c), which indicated that the BSO nanorods acted as more effective pinning centers in ErBCO films. Extremely high Jc of 0.41 MA/cm2 was performed for the ErBCO film with BSO of 4.9 mol% in the magnetic field (B//c) of 3 T. We concluded that not only the decision of pinning materials, but also optimization of the three factors of crystallinity of the superconducting film, Tc of the superconducting film, and doping concentration of the pinning materials into the superconducting film were important to realize higher Jc in a magnetic field.
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U2 - 10.1016/j.physc.2008.05.065
DO - 10.1016/j.physc.2008.05.065
M3 - Article
AN - SCOPUS:50449109983
VL - 468
SP - 1522
EP - 1526
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 15-20
ER -