Effects of RE2O3 (RE = Tm, Sc, Yb) addition on the superconducting properties of ErBa2Cu3Oy |
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| Authors: | R. Kita N. Hosoya N. Otawa S. Kawabata T. Nakamura O. Miura M. Mukaida K. Yamada A. Ichinose K. Matsumoto M.S. Horii Y. Yoshida |
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| Affiliation: | 1. Graduate School of Science and Technology, Shizuoka University, Johoku 3-5-1, Naka-ku, Hamamatsu, Shizuoka 432-8561, Japan;2. Tokyo Metropolitan University, Minamiosawa 1-1, Hachioji, Tokyo 192-0364, Japan;3. Kyushu University, Hakozaki 6-10-1, Higashi-ku 4-3-16, Fukuoka 992-8510, Japan;4. CRIEPI, Nagasaka 2-6-1, Yokohama, Kanagawa 240-0916, Japan;5. Kyusyu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu, Fukuoka 804-8550, Japan;6. Kochi University of Technology, Kami-shi, Kochi 782-8502, Japan;7. Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan |
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| Abstract: | We investigated the effects of added Tm2O3, Sc2O3, and Yb2O3 on the superconducting properties of sintered Er123 samples. Tm2O3 addition caused the least Tc degradation, exhibiting a Tc above 90 K even for 17 vol% addition. Samples with added Sc2O3 maintained a Tc at above 90 K up to an addition of 7.2 vol%, while Yb2O3-containing samples showed a monotonic decrease in Tc with increased vol% of added Yb2O3. Tm2O3-containing samples exhibited a slight increase in Jc(0.1 T)/Jc(0) and had constant Jc values even for 17 vol% addition. XRD and SEM results indicate that the Tm2O3 is very stable in the superconducting matrix. |
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| Keywords: | RE2O3 Tm2O3 Sc2O3 Yb2O3 Artificial pinning center |
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