TY - JOUR
T1 - Superconducting properties and microstructures for Ba2SmNbO6 and BaHfO3 co-doped SmBa2Cu3O y thin films
AU - Kusafuka, Yuma
AU - Ichino, Yusuke
AU - Tsuchiya, Yuji
AU - Ichinose, Ataru
AU - Yoshida, Yuatka
N1 - Funding Information:
This work was partly supported by a grant-in-aid for scientific research (15H04252, 15K14301, 15K14302 and 16K20898), the NU-AIST alliance project and JST-ALCA.
Publisher Copyright:
© 2017 IOP Publishing Ltd.
PY - 2017/11/3
Y1 - 2017/11/3
N2 - Recently, we observed that Ba2SmNbO6 (BSNO), which has a double perovskite structure, forms wide nanorods in a SmBa2Cu3Oy (SmBCO) film when compared with BaHfO3 (BHO) nanorods. These wide nanorods can trap flux quanta effectively in low magnetic fields; on the other hand, narrow nanorods can trap flux quanta in high magnetic fields. In this paper, we doped SmBCO films with BSNO and BHO with the aim of introducing both wide and narrow nanorods and bringing out the flux pinning properties in low and high magnetic fields simultaneously. We investigated their microstructures and superconducting properties, and as a result, we confirmed that wide and narrow nanorods could coexist in the SmBCO films. The wide and narrow nanorods trapped the flux quanta in different magnetic fields. We also explored the optimal composition for BSNO + BHO co-doped SmBCO films. These findings indicate that flux pinning properties can be tuned by the multiple doping of BMO materials.
AB - Recently, we observed that Ba2SmNbO6 (BSNO), which has a double perovskite structure, forms wide nanorods in a SmBa2Cu3Oy (SmBCO) film when compared with BaHfO3 (BHO) nanorods. These wide nanorods can trap flux quanta effectively in low magnetic fields; on the other hand, narrow nanorods can trap flux quanta in high magnetic fields. In this paper, we doped SmBCO films with BSNO and BHO with the aim of introducing both wide and narrow nanorods and bringing out the flux pinning properties in low and high magnetic fields simultaneously. We investigated their microstructures and superconducting properties, and as a result, we confirmed that wide and narrow nanorods could coexist in the SmBCO films. The wide and narrow nanorods trapped the flux quanta in different magnetic fields. We also explored the optimal composition for BSNO + BHO co-doped SmBCO films. These findings indicate that flux pinning properties can be tuned by the multiple doping of BMO materials.
KW - BMO nanorods
KW - SmBaCuOy films
KW - two BMO co-doping
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U2 - 10.1088/1361-6668/aa9241
DO - 10.1088/1361-6668/aa9241
M3 - Article
AN - SCOPUS:85040114207
SN - 0953-2048
VL - 30
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
IS - 12
M1 - 125008
ER -