TY - JOUR
T1 - Improvement of superconducting properties of SmBa2Cu 3Oy films on MgO substrate by using BaZrO3 buffer layer
AU - Hasegawa, Katsuya
AU - Shibata, Junko
AU - Izumi, Teruo
AU - Shiohara, Yuh
AU - Sugawara, Yoshihiro
AU - Hirayama, Tsukasa
AU - Oba, Fumiyasu
AU - Ikuhara, Yuichi
N1 - Funding Information:
This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Application.
PY - 2003/10
Y1 - 2003/10
N2 - Superconducting transport-properties of SmBa2Cu 3Oy (Sm123) films on MgO single crystalline substrates prepared by pulsed laser deposition were investigated. It was found that not only Tc,zero values but also Jc-B properties of the Sm123 films were improved by the BaZrO3 (BZO) buffer layer on MgO substrates. Tc,zero=93.8 K, J c(77K,1T,B∥c)=7.5×105 A/cm2 were obtained for Sm123 films with 0.93 μm thickness. Cross-sectional TEM observations revealed that the Sm123 film grown on the BZO buffer layer has higher crystallinity compared to the Sm123 film without BZO. Thus, improvement of the microstructure for the Sm123 films led to the higher superconducting properties of the Sm123 films. In addition, the effects of the BZO buffer layer on the microstructure and correlation to the superconducting properties of the Sm123 films were explained in view of interfacial energies on the hetero-epitaxial growth.
AB - Superconducting transport-properties of SmBa2Cu 3Oy (Sm123) films on MgO single crystalline substrates prepared by pulsed laser deposition were investigated. It was found that not only Tc,zero values but also Jc-B properties of the Sm123 films were improved by the BaZrO3 (BZO) buffer layer on MgO substrates. Tc,zero=93.8 K, J c(77K,1T,B∥c)=7.5×105 A/cm2 were obtained for Sm123 films with 0.93 μm thickness. Cross-sectional TEM observations revealed that the Sm123 film grown on the BZO buffer layer has higher crystallinity compared to the Sm123 film without BZO. Thus, improvement of the microstructure for the Sm123 films led to the higher superconducting properties of the Sm123 films. In addition, the effects of the BZO buffer layer on the microstructure and correlation to the superconducting properties of the Sm123 films were explained in view of interfacial energies on the hetero-epitaxial growth.
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U2 - 10.1016/S0921-4534(03)01131-6
DO - 10.1016/S0921-4534(03)01131-6
M3 - Conference article
AN - SCOPUS:0042785190
SN - 0921-4534
VL - 392-396
SP - 835
EP - 840
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - PART 2
T2 - Proceedings of the 15th International Symposium on Superconduc
Y2 - 11 November 2002 through 13 November 2002
ER -