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SEM images of cleaved surface (a) and polished surface (b) of ceramics. The insets show the corresponding EDX spectra, respectively. Both of the surfaces were gold coated prior to the SEM observation.
Core-level spectra of Ca (a), Cu (b), Ti (c), and O (d) for the cleaved and polished surfaces of ceramics.
(Color online) Analysis on Cu spectra of the cleaved and polished surfaces of ceramics. Note that the background was subtracted by using Shirley-plus-linear method.
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