High critical current densities were realized in cobalt-doped films on flexible metal substrates with biaxially textured MgO base-layers fabricated by an ion-beam assisted deposition technique. The films showed small in-plane crystalline misorientations of regardless of twice larger misorientations of the MgO base-layers , and exhibited high self-field up to at 2 K. These values are comparable to that on MgO single crystals and the highest among iron pnictide superconducting tapes and wires ever reported. High in-field suggests the existence of -axis correlated vortex pinning centers.
REFERENCES
1.
Y.
Kamihara
et al., J. Am. Chem. Soc.
130
, 3296
(2008
).2.
X. -H.
Chen
et al., Nature (London)
453
, 761
(2008
).3.
C.
Wang
et al., EPL
83
, 67006
(2008
).4.
F.
Hunte
et al., Nature (London)
453
, 903
(2008
).5.
H. Q.
Yuan
et al., Nature (London)
457
, 565
(2009
).6.
A.
Yamamoto
et al., Appl. Phys. Lett.
94
, 062511
(2009
).7.
S. A.
Baily
et al., Phys. Rev. Lett.
102
, 117004
(2009
).8.
D.
Larbalestier
et al., Nature (London)
414
, 368
(2001
).9.
S.
Lee
et al., Appl. Phys. Lett.
95
, 212505
(2009
).10.
T.
Katase
et al., e-print arXiv:1011.5721.11.
S.
Lee
et al., Nature Mater.
9
, 397
(2010
).12.
T.
Katase
et al., Appl. Phys. Express
3
, 063101
(2010
).13.
D.
Rall
et al., Phys. Rev. B
83
, 134514
(2011
).14.
T.
Katase
et al., Appl. Phys. Lett.
96
, 142507
(2010
).15.
S.
Schmidt
et al., Appl. Phys. Lett.
97
, 172504
(2010
).16.
T.
Katase
et al., Supercond. Sci. Technol.
23
, 082001
(2010
).17.
Z.
Gao
et al., Supercond. Sci. Technol.
21
, 105024
(2008
).18.
K.
Togano
et al., Appl. Phys. Express
4
, 043101
(2011
).19.
Y.
Iijima
et al., Appl. Phys. Lett.
60
, 769
(1992
).20.
C. P.
Wang
et al., Appl. Phys. Lett.
71
, 2955
(1997
).21.
V.
Matias
et al., J. Mater. Res.
24
, 125
(2009
).22.
Y.
Yamada
et al., IEEE Trans. Appl. Supercond.
19
, 3236
(2009
).23.
M. P.
Paranthaman
et al., IEEE Trans. Appl. Supercond.
13
, 2481
(2003
).24.
H.
Hilgenkamp
et al., Rev. Mod. Phys.
74
, 485
(2002
).25.
V.
Matias
et al., Supercond. Sci. Technol.
23
, 014018
(2010
).26.
K.
Iida
et al., Appl. Phys. Express
4
, 013103
(2011
).27.
C.
Sheehan
et al., Appl. Phys. Lett.
98
, 071907
(2011
).28.
V.
Matias
et al., IEEE Trans. Appl. Supercond.
17
, 3263
(2007
).29.
M. A.
Tanatar
et al., Phys. Rev. B
79
, 094507
(2009
).30.
B.
Maiorov
et al., Supercond. Sci. Technol.
24
, 055007
(2011
).© 2011 American Institute of Physics.
2011
American Institute of Physics
You do not currently have access to this content.
