TY - JOUR
T1 - High flux pinning in ternary (Nd-Eu-Gd)Ba2Cu3Oy superconductors at 77 K
AU - Muralidhar, M.
AU - Jirsa, M.
AU - Sakai, N.
AU - Murakami, M.
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 Applications. MJ acknowledges support from grant no. A1010919/99 of GA ASCR.
PY - 2002/10/1
Y1 - 2002/10/1
N2 - The optimisation of ternary (Nd-Eu-Gd)Ba2Cu3Oy (NEG) bulk quasi-crystals has been carried out to achieve high pinning at 77 K. For this purpose we prepared samples with various Nd:Eu:Gd ratios in the NEG compound. Our experimental results suggest that a suitable combination of the three elements on the rare earth site can enhance flux pinning at low, intermediate, and high magnetic fields. This is thus an effective tool for tailoring properties of this material according to requirements of the particular application. We show that the maximum flux pinning can be achieved in the whole magnetic field range (at 77 K) when very fine (sub-micron) secondary phase particles are dispersed in a superconducting 123 matrix with an optimum Nd:Eu:Gd ratio.
AB - The optimisation of ternary (Nd-Eu-Gd)Ba2Cu3Oy (NEG) bulk quasi-crystals has been carried out to achieve high pinning at 77 K. For this purpose we prepared samples with various Nd:Eu:Gd ratios in the NEG compound. Our experimental results suggest that a suitable combination of the three elements on the rare earth site can enhance flux pinning at low, intermediate, and high magnetic fields. This is thus an effective tool for tailoring properties of this material according to requirements of the particular application. We show that the maximum flux pinning can be achieved in the whole magnetic field range (at 77 K) when very fine (sub-micron) secondary phase particles are dispersed in a superconducting 123 matrix with an optimum Nd:Eu:Gd ratio.
KW - Critical current density (J)
KW - Flux pinning
KW - Matrix chemical ratio
KW - NEG-123
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U2 - 10.1016/S0921-4534(02)01536-8
DO - 10.1016/S0921-4534(02)01536-8
M3 - Article
AN - SCOPUS:18744425304
SN - 0921-4534
VL - 378-381
SP - 750
EP - 754
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - PART 1
ER -