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- W1488101458 abstract "The effect of Sr chemical pressure on superconductivity was investigated in Hg2(Ba1−ySry)2YCu2O8−δ. The samples were synthesized at high pressure and high temperature from y = 0.0 to full substitution, y = 1.0. These Sr substituted compounds are superconducting, without Ca doping on the Y site, and show a Tc increasing with Sr, reaching 42 K for y = 1.0. A detailed neutron powder diffraction study compares the structural changes induced by this chemical Sr/Ba substitution and the mechanical pressure effects in the Hg-2212 system. It shows the strong decrease of the three Ba/Sr–O distances and consequently the shrinkage of Cu–O 1in−plane and Cu–O 2apical bonds. These structural changes, by affecting the charge transfer which occurs between the charge reservoir and the superconducting block, are responsible of the Tc enhancement with Sr content." @default.
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- W1488101458 date "2004-05-29" @default.
- W1488101458 modified "2023-09-25" @default.
- W1488101458 title "The effect of Sr substitution on superconductivity in Hg<sub>2</sub>(Ba<sub>1 <i>y</i></sub>Sr<sub><i>y</i></sub>)<sub>2</sub>YCu<sub>2</sub>O<sub>8 </sub>: I. A neutron powder diffraction study" @default.
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- W1488101458 doi "https://doi.org/10.1088/0953-8984/16/23/022" @default.
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