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- W1992416076 abstract "We are reporting on results of dc magnetization measurements of the new electron-doped ${mathrm{Nd}}_{2mathrm{ensuremath{-}}mathrm{x}}$${mathrm{Ce}}_{mathrm{x}}$${mathrm{Cu}}_{1mathrm{ensuremath{-}}mathit{y}}$${mathrm{Ga}}_{mathit{y}}$${mathrm{O}}_{4}$ superconductors. The effect of ${mathrm{Ga}}^{3+}$ on ${T}_{c}$ is similar to that of ${mathrm{Ce}}^{4+}$, although the extra electron of the former comes from the Cu-O planes. For example, for x=0.12 the undoped compound (y=0) is not superconducting; but by the addition of Ga (y=0.03), the material becomes superconducting at ${T}_{c}$=20 K, and the Meissner fraction and the critical current density are improved compared to ${mathrm{Nd}}_{1.85}$${mathrm{Ce}}_{0.15}$${mathrm{CuO}}_{4}$. The irreversibility line ${T}_{mathrm{irr}(mathrm{H})}$ for doped and undoped samples scales with the applied field as ${H}^{p}$, with pensuremath{simeq}0.6, but for the Ga-doped sample it is pushed to higher temperatures." @default.
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- W1992416076 date "1989-12-01" @default.
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- W1992416076 title "Effect of Ga substitution on the superconducting properties of the electron-doped system: Nd-Ce-Cu-O" @default.
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- W1992416076 doi "https://doi.org/10.1103/physrevb.40.11366" @default.
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