Superconducting properties versus oxygen content in a Sr-doped HgBa2Ca1-xSrxCu2O 6+δ

N. H. Hur; N. H. Kim; Y. K. Park; J. C. Park; D. H. Choy; H. G. Lee; H. S. Shin; I. S. Yang

doi:10.1016/0921-4534(94)91678-0

Superconducting properties versus oxygen content in a Sr-doped HgBa₂Ca_1-xSr_xCu₂O_6+δ

N. H. Hur, N. H. Kim, Y. K. Park, J. C. Park, D. H. Choy, H. G. Lee, H. S. Shin, I. S. Yang

Department of Physics

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Abstract

Polycrystalline samples of HgBa₂Ca_1-xSr_xCu₂O_6+δ were prepared by solid state reaction of HgO, Ba₂CuO_3+δ and Ca_1-xSrCuO₂ (x=0.14) in an evacuated silica tube. The as-synthesized sample has a T_c of 120 K and has tetragonal symmetry ( P4 mmm) with lattice parameters of a=3.8584(1) A ̊ and c=12.6646(5) A ̊. After annealing under O₂ at 250 °C for 8 h, the T_c was enhanced to 124 K. The content of oxygen uptakes is about 0.11, which was estimated by a TGA analysis. However, the X-ray powder diffraction data and the Raman spectra of both as-synthesized and oxygen-annealed samples did not show any substantial difference.

Original language	English
Pages (from-to)	907-908
Number of pages	2
Journal	Physica C: Superconductivity and its Applications
Volume	235-240
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4534(94)91678-0
State	Published - Dec 1994

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@article{f8c86fa204a64e4ea5ba5da4d36f9d7e,

title = "Superconducting properties versus oxygen content in a Sr-doped HgBa2Ca1-xSrxCu2O 6+δ ",

abstract = "Polycrystalline samples of HgBa2Ca1-xSrxCu2O 6+δ were prepared by solid state reaction of HgO, Ba2CuO3+δ and Ca1-xSrCuO2 (x=0.14) in an evacuated silica tube. The as-synthesized sample has a Tc of 120 K and has tetragonal symmetry ( P4 mmm) with lattice parameters of a=3.8584(1) A ̊ and c=12.6646(5) A ̊. After annealing under O2 at 250 °C for 8 h, the Tc was enhanced to 124 K. The content of oxygen uptakes is about 0.11, which was estimated by a TGA analysis. However, the X-ray powder diffraction data and the Raman spectra of both as-synthesized and oxygen-annealed samples did not show any substantial difference.",

author = "Hur, {N. H.} and Kim, {N. H.} and Park, {Y. K.} and Park, {J. C.} and Choy, {D. H.} and Lee, {H. G.} and Shin, {H. S.} and Yang, {I. S.}",

year = "1994",

month = dec,

doi = "10.1016/0921-4534(94)91678-0",

language = "English",

volume = "235-240",

pages = "907--908",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

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TY - JOUR

T1 - Superconducting properties versus oxygen content in a Sr-doped HgBa2Ca1-xSrxCu2O 6+δ

AU - Hur, N. H.

AU - Kim, N. H.

AU - Park, Y. K.

AU - Park, J. C.

AU - Choy, D. H.

AU - Lee, H. G.

AU - Shin, H. S.

AU - Yang, I. S.

PY - 1994/12

Y1 - 1994/12

N2 - Polycrystalline samples of HgBa2Ca1-xSrxCu2O 6+δ were prepared by solid state reaction of HgO, Ba2CuO3+δ and Ca1-xSrCuO2 (x=0.14) in an evacuated silica tube. The as-synthesized sample has a Tc of 120 K and has tetragonal symmetry ( P4 mmm) with lattice parameters of a=3.8584(1) A ̊ and c=12.6646(5) A ̊. After annealing under O2 at 250 °C for 8 h, the Tc was enhanced to 124 K. The content of oxygen uptakes is about 0.11, which was estimated by a TGA analysis. However, the X-ray powder diffraction data and the Raman spectra of both as-synthesized and oxygen-annealed samples did not show any substantial difference.

AB - Polycrystalline samples of HgBa2Ca1-xSrxCu2O 6+δ were prepared by solid state reaction of HgO, Ba2CuO3+δ and Ca1-xSrCuO2 (x=0.14) in an evacuated silica tube. The as-synthesized sample has a Tc of 120 K and has tetragonal symmetry ( P4 mmm) with lattice parameters of a=3.8584(1) A ̊ and c=12.6646(5) A ̊. After annealing under O2 at 250 °C for 8 h, the Tc was enhanced to 124 K. The content of oxygen uptakes is about 0.11, which was estimated by a TGA analysis. However, the X-ray powder diffraction data and the Raman spectra of both as-synthesized and oxygen-annealed samples did not show any substantial difference.

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U2 - 10.1016/0921-4534(94)91678-0

DO - 10.1016/0921-4534(94)91678-0

M3 - Article

AN - SCOPUS:50749134830

SN - 0921-4534

VL - 235-240

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JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - PART 2

ER -

Superconducting properties versus oxygen content in a Sr-doped HgBa2Ca1-xSrxCu2O 6+δ

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Superconducting properties versus oxygen content in a Sr-doped HgBa₂Ca_1-xSr_xCu₂O_6+δ