Abstract
GdBa 2 Cu 3 O 7-δ is one of the best candidates for the superconducting coated conductors because it has high critical temperature and high critical current density under high magnetic fields. In this study, superconducting GdBa 2 Cu 3 O 7-δ films were fabricated by fluorine-free metal organic deposition method via two different calcination temperatures, 723K and 873K, to examine the influence of calcination temperature on film growth and superconducting characteristics. Critical temperatures and critical current densities of the sample calcined at 873K were superior to the sample calcined at 723K. In the case of the sample calcined at 723K, the mixture of amorphous and crystalline phases was observed, and that of a- and c-axis oriented grains after the crystallization. In the case of the sample calcined at 873K, the randomly oriented crystalline phases were observed, and the mixture of c-axis oriented grains and (Gd, Al) 2 BaO 4 phase after the crystallization. These microstructural changes caused the differences in superconducting characteristics.
| Original language | English |
|---|---|
| Pages (from-to) | 44-50 |
| Number of pages | 7 |
| Journal | Micron |
| Volume | 50 |
| DOIs | |
| Publication status | Published - Jul 1 2013 |
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All Science Journal Classification (ASJC) codes
- Structural Biology
- Cell Biology
Cite this
Influences of calcination temperature on growth and superconducting properties of GdBa 2 Cu 3 O 7-δ films fabricated by fluorine-free metal organic deposition method . / Yamada, Kazuhiro; Kaneko, Kenji; Yoshida, Yuki; Nishiyama, Takeshi; Teranishi, Ryo; Suzuki, Koji; Ito, Motoji; Miura, Osuke; Kita, Ryusuke.
In: Micron, Vol. 50, 01.07.2013, p. 44-50.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influences of calcination temperature on growth and superconducting properties of GdBa 2 Cu 3 O 7-δ films fabricated by fluorine-free metal organic deposition method
AU - Yamada, Kazuhiro
AU - Kaneko, Kenji
AU - Yoshida, Yuki
AU - Nishiyama, Takeshi
AU - Teranishi, Ryo
AU - Suzuki, Koji
AU - Ito, Motoji
AU - Miura, Osuke
AU - Kita, Ryusuke
PY - 2013/7/1
Y1 - 2013/7/1
N2 - GdBa 2 Cu 3 O 7-δ is one of the best candidates for the superconducting coated conductors because it has high critical temperature and high critical current density under high magnetic fields. In this study, superconducting GdBa 2 Cu 3 O 7-δ films were fabricated by fluorine-free metal organic deposition method via two different calcination temperatures, 723K and 873K, to examine the influence of calcination temperature on film growth and superconducting characteristics. Critical temperatures and critical current densities of the sample calcined at 873K were superior to the sample calcined at 723K. In the case of the sample calcined at 723K, the mixture of amorphous and crystalline phases was observed, and that of a- and c-axis oriented grains after the crystallization. In the case of the sample calcined at 873K, the randomly oriented crystalline phases were observed, and the mixture of c-axis oriented grains and (Gd, Al) 2 BaO 4 phase after the crystallization. These microstructural changes caused the differences in superconducting characteristics.
AB - GdBa 2 Cu 3 O 7-δ is one of the best candidates for the superconducting coated conductors because it has high critical temperature and high critical current density under high magnetic fields. In this study, superconducting GdBa 2 Cu 3 O 7-δ films were fabricated by fluorine-free metal organic deposition method via two different calcination temperatures, 723K and 873K, to examine the influence of calcination temperature on film growth and superconducting characteristics. Critical temperatures and critical current densities of the sample calcined at 873K were superior to the sample calcined at 723K. In the case of the sample calcined at 723K, the mixture of amorphous and crystalline phases was observed, and that of a- and c-axis oriented grains after the crystallization. In the case of the sample calcined at 873K, the randomly oriented crystalline phases were observed, and the mixture of c-axis oriented grains and (Gd, Al) 2 BaO 4 phase after the crystallization. These microstructural changes caused the differences in superconducting characteristics.
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U2 - 10.1016/j.micron.2013.04.004
DO - 10.1016/j.micron.2013.04.004
M3 - Article
VL - 50
SP - 44
EP - 50
JO - Micron
JF - Micron
SN - 0968-4328
ER -