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Sintered material of Pr 2 Ba 4 Cu 7 O 15−δ (Pr247) was synthesized at ambient pressure condition by using citrate pyrolysis precursor method, and the superconductivity caused by oxygen reduction treatment has been confirmingly observed and examined.By resistivity and magnetization experiments, it has been found that the critical temperature T c of the reduced...
Local structures of nickel silicide formed by heat treatment of a nickel layer sputtered on silicon (100) substrate were observed by high-resolution transmission electron microscopy. In the specimen as-sputtered and after heat treatment at 498K, a thin layer was found at the interface between Ni (Ni2Si) and the Si substrate. The layer was an initial phase of silicidation and seems to be non-fluorite...
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