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- W2038962785 abstract "Abstract Samples with various nominal compositions in the Tb–Hg–Sr–Ca–Cu–O system were prepared and studied by EDX, powder X-ray diffraction including the Rietveld refinement, electrical resistivity, magnetic susceptibility and thermoelectric power measurements. EDX and powder X-ray diffraction studies showed that Tb is required for the stabilization of the 1212, (Hg 1− y Tb y )Sr 2 TbCu 2 O 6+ δ ; y ≈0.5 phase. Electrical resistivity and magnetic susceptibility measurements indicated that substitution of Tb by Ca is necessary to induce superconductivity in the 1212, (Hg 0.5 Tb 0.5 )Sr 2 (Tb 1− x Ca x )Cu 2 O 6+ δ samples. The Rietveld refinements of the X-ray data of two samples with x =0.0 and 0.5 were carried out on the basis of tetragonal symmetry (space group P 4/ mmm ) and the results indicated that the phase with x =0.5 has less puckered Cu–O planes than the Ca-free (Hg 0.5 Tb 0.5 )Sr 2 TbCu 2 O 6+ δ phase. Syperconductivity is observed only for samples with x >0.2 and T c increases with increasing Ca content, x . The results of thermoelectric power measurements suggest that the samples with x x =0.8 sample is optimally doped and exhibits the highest T c of 88 K." @default.
- W2038962785 created "2016-06-24" @default.
- W2038962785 creator A5002469480 @default.
- W2038962785 date "2003-05-01" @default.
- W2038962785 modified "2023-09-26" @default.
- W2038962785 title "Synthesis, structural and physical properties of new Terbium containing Tb–Hg–Sr–Ca–Cu–O superconducting system" @default.
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- W2038962785 doi "https://doi.org/10.1016/s0022-3697(02)00260-3" @default.
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