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The influence of copper oxide (CuO) content on the structure of 3B 2 O 3 .SrO glass was investigated by means of Raman spectroscopy. For the sample without CuO, the Raman spectrum indicates a structure with majority pentaborate groups. At high wavenumbers, there is a broad and intense band probably due to fluorescence induced by strontium. The addition of CuO in 3B 2 O ...
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