Synthesis and start cation-composition of HgBa2CuO4+δ

Q. Xiong, F. T. Chan, Y. Y. Xue, C. W. Chu

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10 Citations (Scopus)


The synthesis conditions of HgBa2CuO4 + δ were studied. It was observed that the best phase purity was achieved at an apparent cation ratio of Hg:Ba:Cu = 0.7:2:1 that was obtained by either Hg deficient initial compositions or extra Hg absorbents, e.g. Au foil. No significant impurities or site mixing can be identified by X-ray/neutron powder diffraction investigations in these non-stoichiometric samples. However, their large paramagnetic background suggests the existence of (Ba, Cu) oxides. Our data also show that this apparent Hg deficiency is likely to be synthesis-reaction related.

Original languageEnglish
Pages (from-to)329-333
Number of pages5
JournalPhysica C: Superconductivity and its applications
Issue number3-4
Publication statusPublished - 1995 Nov 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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