Structure and Bonding of Bi-Sr-Ca-Cu-O Crystal by X-Ray Photoelectron-Spectroscopy

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X-ray photoelectron spectroscopy was performed on high-Tc superconducting Bi-Sr-Ca-Cu-O single crystals with Tc∼80 K. The core-level electron spectra of Sr, Ca, and Bi show the possibility of exchanging their lattice sites in the crystal. On the other hand, the core-level electron spectrum of Cu indicates a unique lattice site in the crystal. These features are consistent with the structure model for the crystal with formula unit Bi2(Sr,Ca)3Cu2Oy. We can readily determine the distribution of Sr, Ca, and Bi in the cation sites by x-ray photoelectron spectroscopy in contrast to x-ray diffraction and high-resolution transmission electron microscopy.

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  • Physical review B. Condensed matter

    Physical review B. Condensed matter 38 (13), 8868-8872, 1988-11-01

    Published for the American Physical Society by the American Institute of Physics

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