TY - JOUR
T1 - Vortex Pinning Properties at Grain Boundary in SmBa2Cu3Oy Superconducting Films with BaHfO3 Nanorods Controlled via Low-Temperature Growth
AU - Miura, Shun
AU - Ichino, Yusuke
AU - Yoshida, Yutaka
AU - Ichinose, Ataru
AU - Tsuruta, Akihiro
N1 - Funding Information:
This work was supported in part by Grants-in-Aid for Scientific Research (23226014, 25289358, 15H04252, and 15K14301) from the Japan Society for the Promotion of Science (JSPS) and in part by a Grant-in-Aid for JSPS Fellows (16J02416).
Publisher Copyright:
© 2017 IEEE.
PY - 2017/6
Y1 - 2017/6
N2 - We investigated the effect of the BaHfO3 (BHO) nanorods' configuration on transport properties at artificial grain boundaries (GBs) in SmBa2Cu3Oy (SmBCO) superconducting films. To control the nanorods' configuration at the GBs, we deposited 3.0 vol.% BHO-doped SmBCO films on 5° [001]-tilt bicrystal (LaAlO3)0.3(SrAl0.5Ta0.5O3)0.7 substrates at relatively low growth temperature of 750 °C via the pulsed laser deposition method adopting a seed layer technique. According to the transport results, the critical current density (Jc) at the GBs was improved in the films with the nanorods at low magnetic fields. In addition, field angular dependence of Jc was also improved for a wide range of field directions with a broad peak for B//c. We estimated that the BHO nanorods in the GBs pinned the Abrikosov-Josephson (AJ) vortices with various directions in the GBs. AJ vortex pinning can be controlled by configuration of a pinning center at GB.
AB - We investigated the effect of the BaHfO3 (BHO) nanorods' configuration on transport properties at artificial grain boundaries (GBs) in SmBa2Cu3Oy (SmBCO) superconducting films. To control the nanorods' configuration at the GBs, we deposited 3.0 vol.% BHO-doped SmBCO films on 5° [001]-tilt bicrystal (LaAlO3)0.3(SrAl0.5Ta0.5O3)0.7 substrates at relatively low growth temperature of 750 °C via the pulsed laser deposition method adopting a seed layer technique. According to the transport results, the critical current density (Jc) at the GBs was improved in the films with the nanorods at low magnetic fields. In addition, field angular dependence of Jc was also improved for a wide range of field directions with a broad peak for B//c. We estimated that the BHO nanorods in the GBs pinned the Abrikosov-Josephson (AJ) vortices with various directions in the GBs. AJ vortex pinning can be controlled by configuration of a pinning center at GB.
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U2 - 10.1109/TASC.2016.2638543
DO - 10.1109/TASC.2016.2638543
M3 - Article
AN - SCOPUS:85017505352
SN - 1051-8223
VL - 27
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 4
M1 - 7781616
ER -