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자연과학대학
물리학전공
Journal papers
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Superconducting properties versus oxygen content in a Sr-doped HgBa2Ca1-xSrxCu2O6+δ
Title
Superconducting properties versus oxygen content in a Sr-doped HgBa2Ca1-xSrxCu2O6+δ
Authors
Hur N.H.
;
Kim N.H.
;
Park Y.K.
;
Park J.C.
;
Choy D.H.
;
Lee H.-G.
;
Shin H.-S.
;
Yang I.-S.
Ewha Authors
양인상
SCOPUS Author ID
양인상
Issue Date
1994
Journal Title
Physica C: Superconductivity and its applications
ISSN
0921-4534
Citation
Physica C: Superconductivity and its applications vol. 235-240, no. PART 2, pp. 907 - 908
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
Abstract
Polycrystalline samples of HgBa2Ca1-xSrxCu2O6+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. © 1994.
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