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- W2060669968 abstract "The high quality Er-doping Y0.8Er0.2Ba2Cu3O7−δ (YErBCO) crystal is grown by the melted-textured-growth (MTG) method. The microstructure photograph shows that the MTG-YErBCO crystal has an obvious layered structure. Its magnetization loops show that the irreversibility field is decreased by Er-doping for H//c and that there is an anomalous behaviour, a second peak, in the magnetization curve for H//ab. The critical current density along the ab-plane (Jcab(77 K, 0 T) = 4.75 × 104 A cm−2) is higher than that along the c-axis (Jcc(77 K, 0 T) = 470 A cm−2). The field dependence of the irreversibility temperature Tirr follows a power law, H = H0(1 − Tirr(H)/Tirr(0))1.3, with H0 = 550 T for H//ab and 51 T for H//c, respectively. The field dependence of the activation energy Ue shows a different behaviour for H//ab and for H//c, namely a linear relation, U = 49131–3006H, for H//ab and a power law, U ∝ H−0.68, for H//c, respectively. The anisotropy factor γ = 15 was obtained from the angular dependences of the activation energy and the irreversibility temperature. A possible reason for the effect of Er addition on the flux-pinning behaviour has been discussed." @default.
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- W2060669968 date "2002-01-09" @default.
- W2060669968 modified "2023-10-18" @default.
- W2060669968 title "The effect of Er-substitution on the superconducting properties of MTG-YBaCuO crystals" @default.
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- W2060669968 doi "https://doi.org/10.1088/0953-2048/15/2/301" @default.
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