抄録
We investigated the temperature (T) variation of the normalized magnetization relaxation rate S and of the corresponding normalized vortex-creep activation energy U* = T/S for YBa2Cu3O7 films containing BaZrO3 nanorods, with the external magnetic field H oriented perpendicular to the film surface. It was found that by increasing the film thickness and using nanodot decorated substrates the high-T S(T) maximum appearing at low H is substituted by a minimum in S(T). As revealed by the analysis of the current density dependence of U*, this behaviour is due to the inhibition of vortex excitations involving double vortex-kinks and superkinks formation in the investigated thick films, owing to the large nanorod splay and pinning energy dispersion.
| 元の言語 | English |
|---|---|
| 記事番号 | 045008 |
| ジャーナル | Superconductor Science and Technology |
| 巻 | 26 |
| 発行部数 | 4 |
| DOI | |
| 出版物ステータス | Published - 2013 4 1 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Ceramics and Composites
- Materials Chemistry
- Metals and Alloys
これを引用
Inhibition of the detrimental double vortex-kink formation in thick YBa2Cu3O7 films with BaZrO3 nanorods. / Miu, D.; Ivan, I.; Crisan, A.; Mele, Paolo; Jakob, G.; Miu, L.
：: Superconductor Science and Technology, 巻 26, 番号 4, 045008, 01.04.2013.研究成果: Article
}
TY - JOUR
T1 - Inhibition of the detrimental double vortex-kink formation in thick YBa2Cu3O7 films with BaZrO3 nanorods
AU - Miu, D.
AU - Ivan, I.
AU - Crisan, A.
AU - Mele, Paolo
AU - Jakob, G.
AU - Miu, L.
PY - 2013/4/1
Y1 - 2013/4/1
N2 - We investigated the temperature (T) variation of the normalized magnetization relaxation rate S and of the corresponding normalized vortex-creep activation energy U* = T/S for YBa2Cu3O7 films containing BaZrO3 nanorods, with the external magnetic field H oriented perpendicular to the film surface. It was found that by increasing the film thickness and using nanodot decorated substrates the high-T S(T) maximum appearing at low H is substituted by a minimum in S(T). As revealed by the analysis of the current density dependence of U*, this behaviour is due to the inhibition of vortex excitations involving double vortex-kinks and superkinks formation in the investigated thick films, owing to the large nanorod splay and pinning energy dispersion.
AB - We investigated the temperature (T) variation of the normalized magnetization relaxation rate S and of the corresponding normalized vortex-creep activation energy U* = T/S for YBa2Cu3O7 films containing BaZrO3 nanorods, with the external magnetic field H oriented perpendicular to the film surface. It was found that by increasing the film thickness and using nanodot decorated substrates the high-T S(T) maximum appearing at low H is substituted by a minimum in S(T). As revealed by the analysis of the current density dependence of U*, this behaviour is due to the inhibition of vortex excitations involving double vortex-kinks and superkinks formation in the investigated thick films, owing to the large nanorod splay and pinning energy dispersion.
UR - http://www.scopus.com/inward/record.url?scp=84875403797&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84875403797&partnerID=8YFLogxK
U2 - 10.1088/0953-2048/26/4/045008
DO - 10.1088/0953-2048/26/4/045008
M3 - Article
AN - SCOPUS:84875403797
VL - 26
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 4
M1 - 045008
ER -