Abstract
Several studies have been undertaken to investigate the fine structure and superconductive properties of high temperature superconductors. Yuan et al. utilized electron energy loss spectroscopy (EELS) to determine the dielectric function of the superconductor Ba2YCu3O7-x. In this study we performed EELS on the superconductor Bi1.8Pb0.3Sr2Ca2Cu3O10at both room temperature and below the transition temperature and calculated such properties as the dielectric fuction, the inelastic mean free path and the stopping power for this material.Powdered Bi1.8Pb0.3Sr2Ca2Cu3O10was dispersed by sonication in a 0.2% (wt/v) solution of poly-(N-vinylpyrrolidone) in isoproponal. Individual crystals were allowed to settle and dry on a lacey cabon film. Figure 1 shows a typical individual crystal and Fig.2 shows a typical diffraction pattern. Electron energy loss spectra were recorded from single crystals which extended into holes in the film. The EEL spectra were recorded at room temperature and at 95°K which is below the transition temperature of 105 °K.
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