Abstract
Single-domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ grains were obtained via modified melt processing in air using NdBa2Cu3O7-δ seeds. The facet growth front was observed in the a/b growth direction and the stepwise growth front in the c growth direction. A series of crystal defects: dislocations, twin boundaries and local chemical variations between rare earth and Ba were revealed by transmission electron microscopy and energy dispersive spectrum analysis. In addition, a slightly higher concentration of Sm than Eu was revealed in the matrix. A high Tc value up to 94.5 K and enhanced Jc values over a wide field range at 77 K were obtained after Ar post-annealing. A pellet of diameter 16 mm trapped 0.45 T field at 77 K.
| Original language | English |
|---|---|
| Pages (from-to) | 157-163 |
| Number of pages | 7 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 366 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2002 Jan 15 |
| Externally published | Yes |
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Keywords
- (Sm,Eu)BaCu O
- Melt processing
- Microstructure defect
- Superconducting properties
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Microstructures and superconducting properties of single domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ superconductors fabricated in air. / Hu, A.; Sakai, Naomichi; Ogasawara, K.; Murakami, Masato.
In: Physica C: Superconductivity and its Applications, Vol. 366, No. 3, 15.01.2002, p. 157-163.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microstructures and superconducting properties of single domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ superconductors fabricated in air
AU - Hu, A.
AU - Sakai, Naomichi
AU - Ogasawara, K.
AU - Murakami, Masato
PY - 2002/1/15
Y1 - 2002/1/15
N2 - Single-domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ grains were obtained via modified melt processing in air using NdBa2Cu3O7-δ seeds. The facet growth front was observed in the a/b growth direction and the stepwise growth front in the c growth direction. A series of crystal defects: dislocations, twin boundaries and local chemical variations between rare earth and Ba were revealed by transmission electron microscopy and energy dispersive spectrum analysis. In addition, a slightly higher concentration of Sm than Eu was revealed in the matrix. A high Tc value up to 94.5 K and enhanced Jc values over a wide field range at 77 K were obtained after Ar post-annealing. A pellet of diameter 16 mm trapped 0.45 T field at 77 K.
AB - Single-domain (Sm0.5,Eu0.5)Ba2Cu3 O7-δ grains were obtained via modified melt processing in air using NdBa2Cu3O7-δ seeds. The facet growth front was observed in the a/b growth direction and the stepwise growth front in the c growth direction. A series of crystal defects: dislocations, twin boundaries and local chemical variations between rare earth and Ba were revealed by transmission electron microscopy and energy dispersive spectrum analysis. In addition, a slightly higher concentration of Sm than Eu was revealed in the matrix. A high Tc value up to 94.5 K and enhanced Jc values over a wide field range at 77 K were obtained after Ar post-annealing. A pellet of diameter 16 mm trapped 0.45 T field at 77 K.
KW - (Sm,Eu)BaCu O
KW - Melt processing
KW - Microstructure defect
KW - Superconducting properties
UR - http://www.scopus.com/inward/record.url?scp=0037079756&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037079756&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(01)00885-1
DO - 10.1016/S0921-4534(01)00885-1
M3 - Article
AN - SCOPUS:0037079756
VL - 366
SP - 157
EP - 163
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 3
ER -