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The nanocomposite of hard (BaFe 12 O 19 )/soft ferrite (Ni 0.8 Zn 0.2 Fe 2 O 4 ) was prepared by the sol–gel process, and then the polyaniline(PANI)/polypyrrole(PPY)-BaFe 12 O 19 /Ni 0.8 Zn 0.2 Fe 2 O 4 was produced by in situ polymerization method. The structures, morphology and electromagnetic properties...
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