TY - JOUR
T1 - YBa2Cu3O7-x + YSZ mixed films with enhanced critical current densities in magnetic field
AU - Mele, P.
AU - Matsumoto, K.
AU - Horide, T.
AU - Ichinose, A.
AU - Mukaida, M.
AU - Yoshida, Y.
AU - Horii, S.
PY - 2007/10/1
Y1 - 2007/10/1
N2 - YBa2Cu3O7-x + YSZ (YBCO + YSZ) mixed films were prepared on SrTiO3/MgO substrates by pulsed laser deposition (PLD) from a YBCO target with thin YSZ sector on the top of the target. In comparison with a pure YBCO film, the Jc at 77 K for mixed YBCO + YSZ thin film was enhanced from 1.46 MA/cm2 to 1.95 MA/cm2 (self-field) and from 0.09 MA/cm2 to 0.28 MA/cm2 (B∥c, B = 5 T) even when both films were prepared on the same deposition conditions. In the YSZ-added sample, the angular dependence of Jc shows a broad peak at B∥c, due to the flux pinning by c-axis correlated defects. Consistently, elongated nanorods grown in the direction parallel to c-axis were observed in cross-sectional TEM images.
AB - YBa2Cu3O7-x + YSZ (YBCO + YSZ) mixed films were prepared on SrTiO3/MgO substrates by pulsed laser deposition (PLD) from a YBCO target with thin YSZ sector on the top of the target. In comparison with a pure YBCO film, the Jc at 77 K for mixed YBCO + YSZ thin film was enhanced from 1.46 MA/cm2 to 1.95 MA/cm2 (self-field) and from 0.09 MA/cm2 to 0.28 MA/cm2 (B∥c, B = 5 T) even when both films were prepared on the same deposition conditions. In the YSZ-added sample, the angular dependence of Jc shows a broad peak at B∥c, due to the flux pinning by c-axis correlated defects. Consistently, elongated nanorods grown in the direction parallel to c-axis were observed in cross-sectional TEM images.
KW - Artificial pinning center
KW - J
KW - Vortex pinning
KW - YBCO
KW - YSZ doping
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U2 - 10.1016/j.physc.2007.02.026
DO - 10.1016/j.physc.2007.02.026
M3 - Article
AN - SCOPUS:34548413725
SN - 0921-4534
VL - 463-465
SP - 653
EP - 656
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - SUPPL.
ER -