Preparation and some properties of H/sub x/REBa/sub 2/Cu/sub 3/O/sub 7/ (RE = Er, Nd, Dy, Ho, Gd) superconductors
作者： J. Johnson , M. Suenaga , P. Thompson , J. Reilly
DOI:
关键词: Hydrogen 、 Oxide 、 Hydride 、 Analytical chemistry 、 Precipitation (chemistry) 、 Amorphous solid 、 Superconductivity 、 Inorganic chemistry 、 Neutron diffraction 、 Materials science 、 Phase (matter)
摘要: Hydrogen gas has been found to react directly with the subject oxides. Most exhibit a small region of H solid solubility which remains superconducting slight increase in critical temperature (1 2K). At higher contents hydrogen rich hydride phase precipitates is amorphous. The phases are not at 4K or above. Neutron diffraction studies D/sub 1.55/YBa/sub 2/Cu/sub 3/O/sub 7/ confirm that D amorphous but its precipitation causes increased microtwinning saturated oxide. 12 refs., 3 figs.
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