Structural and Superconducting Properties of Hg0.75Re0.25Ba2−xSrxCa2Cu3O8+δ Superconductors Grown by Sol–Gel and Sealed Quartz Tube Synthesis

Sin, A.; Alsina, F.; Mestres, N.; Sulpice, A.; Odier, P.; Núñez-Regueiro, M.

doi:10.1006/jssc.2001.9343

Cited by 5 publications

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References 44 publications

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“…The same difference for the SB is also observed, between mechanical pressure in Hg-1223 [17] and chemical pressure in Sr substituted CuBa 2 YCu 2 O 7−δ (Cu-1212) [18], Cu 2 Ba 2 YCu 2 O 8 (Cu-2212) [19] and Hg-12 (n − 1)n layered cuprates [13,20]. It cannot be directly linked with the variation of T c , since in Hg-2212 Sr enhances T c , while in Cu-1212, Cu-2212 and Hg-12 (n − 1)n it decreases T c [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

The effect of Sr substitution on superconductivity in Hg₂(Ba_1 ySr_y)₂Y Cu₂O₈: II. A bond valence sum approach to the hole distribution

Toulemonde¹,

Odier²,

Bordet³

et al. 2004

J. Phys.: Condens. Matter

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The effects of Sr substitution on superconductivity, and more particularly the changes induced in the hole doping mechanism, were investigated in Hg 2 (Ba 1−y Sr y ) 2 YCu 2 O 8−δ by a 'bond valence sum' analysis, with Sr content going from y = 0.0 to 1.0. A comparison with CuBa 2 YCu 2 O 7−δ and Cu 2 Ba 2 YCu 2 O 8 systems suggests a possible explanation of the T c enhancement from 0 K for y = 0.0 to 42 K for y = 1.0. The charge distribution among atoms of the unit cell was determined from the refined structure, for y = 0.0-1.0. It shows a charge transfer to the superconducting CuO 2 plane via two doping channels π(1) and π(2), i.e. through O2 apical -Cu and Ba/Sr-O1 bonds respectively.

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Section: Introductionmentioning

confidence: 99%

The effect of Sr substitution on superconductivity in Hg₂(Ba_1 ySr_y)₂Y Cu₂O₈: II. A bond valence sum approach to the hole distribution

Toulemonde¹,

Odier²,

Bordet³

et al. 2004

J. Phys.: Condens. Matter

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Study of Carrier Transfer Mechanism When Substituting Strontium at Barium Sites in CuTl-1223 Superconducting Phase

Safeer

Riaz

Khan

2021

Journal of Elec Materi

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Enhancement of Tc by Sr substitution for Ba in Hg-2212 superconductor

Toulemonde¹,

Odier²

2004

Physica C: Superconductivity

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The Ba substitution by Sr has been studied in two Hg-2212 The y = 0 compound of the first series is the non superconducting Hg 2 Ba 2 YCu 2 O 8−δ prototype. In the second series, this y = 0 compound is already superconducting at 21 K. Indeed the members of this series present a higher charge carrier density in their CuO 2 superconducting planes than their homologues of the first series due to the doping introduced by the substitution of 20 % of Y by Ca. The compounds of both series were synthesized in high pressure (3.5 GPa) -high temperature (950 -1050˚C) conditions. In both cases Sr substitution was successful up to the full replacement of Ba (y = 1.0). The Hg-2212 phases were characterized by XRD, SEM, EDX and a.c. susceptibility.

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Structural and Superconducting Properties of Hg0.75Re0.25Ba2−xSrxCa2Cu3O8+δ Superconductors Grown by Sol–Gel and Sealed Quartz Tube Synthesis

Cited by 5 publications

References 44 publications

The effect of Sr substitution on superconductivity in Hg₂(Ba_1 ySr_y)₂Y Cu₂O₈: II. A bond valence sum approach to the hole distribution

The effect of Sr substitution on superconductivity in Hg₂(Ba_1 ySr_y)₂Y Cu₂O₈: II. A bond valence sum approach to the hole distribution

Study of Carrier Transfer Mechanism When Substituting Strontium at Barium Sites in CuTl-1223 Superconducting Phase

Enhancement of Tc by Sr substitution for Ba in Hg-2212 superconductor

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Structural and Superconducting Properties of Hg0.75Re0.25Ba2−xSrxCa2Cu3O8+δ Superconductors Grown by Sol–Gel and Sealed Quartz Tube Synthesis

Cited by 5 publications

References 44 publications

The effect of Sr substitution on superconductivity in Hg2(Ba1 ySry)2Y Cu2O8 : II. A bond valence sum approach to the hole distribution

The effect of Sr substitution on superconductivity in Hg2(Ba1 ySry)2Y Cu2O8 : II. A bond valence sum approach to the hole distribution

Study of Carrier Transfer Mechanism When Substituting Strontium at Barium Sites in CuTl-1223 Superconducting Phase

Enhancement of Tc by Sr substitution for Ba in Hg-2212 superconductor

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The effect of Sr substitution on superconductivity in Hg₂(Ba_1 ySr_y)₂Y Cu₂O₈: II. A bond valence sum approach to the hole distribution

The effect of Sr substitution on superconductivity in Hg₂(Ba_1 ySr_y)₂Y Cu₂O₈: II. A bond valence sum approach to the hole distribution