Ba2(Cu0.7Cd0.3)O3: a new double-center perovskite structure

W. J. Yu, Zh Q. Mao, Sh J. Feng, M. L. Tian, G. E. Zhou, Y. H. Zhang

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2 Scopus citations


A new phase of Ba2(Cu0.7Cd0.3)O3 has been discovered. The composition of the phase was examined by energy dispersive X-ray spectrometry. The phase exhibits a tetragonal structure with lattice constants a=4.077 A ̊ and c=7.970 A ̊, and its space group is P4/mmm. We propose a double-center-perovskite structure model, which is similar to that of (Ba, Sr)2CuO2(CO3) [1, 2]. The simulated XRD is close to the observed one. The analysis results of elemental analyzer and Fourier transform infrared spectrometer reveal that the phase does not contain CO 2 3-. The cuprate is an insulator, but its new cell structure and the large size of the CuO2 planes seem to suggest a good reason for researching new superconductors. The roles of CdO in the solid state reaction and the formation of the new phase are discussed.

Original languageEnglish (US)
Pages (from-to)323-326
Number of pages4
JournalPhysica C: Superconductivity and its applications
Issue number3-4
StatePublished - Sep 10 1994

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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