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Multiferroic Ba 1.6 Sr 1.4 Co 2 Fe 24 O 41 with Z-type hexagonal structure was obtained through the proteic sol–gel process with a majoritary phase by thermic treatment at 1200°C for 2h. Raman spectroscopy showed significant abnormalities in the position and intensity of the vibrational modes as a function of increasing temperature. The intensity and Raman shift...
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