In Situ Combination and Phase Formation of Sol-Gel Derived PbTiO3/(Ni,Pb) Ferrite Multiphase Powders

Abstract

Abstract: Ferroelectric/ferromagnetic multiphase composite powders consisting of PbTiO3 as ferroelectricity and NiFe2O4 (PbFe12O19) as ferromagnetism were successfully formed in situ by the sol-gel method. The phase structure was measured by XRD and the morphology was observed by SEM. The results show that the biphase composite powder consisting of PbTiO3 and NiFe2O4 are formed at - 700℃ and the triphase composite powder consisting of PbTiO3, NiFe2O4 and PbFe12O19, above 750℃ in situ in alead-acetate/tetrabutyl-titanate/nickel-acetate/ferric-nitrate precursor system. The forming and growing processes are dependent on the calcination temperatrues of the powders. In addition, the phases coexisting in the composite system are mostly in forms of solid solutions, and the lattice constant of each phase varies with the different amount of phase solubility.

Key words: ferroelectric/magnetic composite, PbTiO₃/Ni（Pb）-ferrite, in situ combination, sol-gel method

CLC Number:

TM277
TB33

DONG Yan-Ling,DU Pi-Yi,WENG Wen-Jian,HAN Gao-Rong. In Situ Combination and Phase Formation of Sol-Gel Derived PbTiO₃/(Ni,Pb) Ferrite Multiphase Powders[J]. Journal of Inorganic Materials.

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In Situ Combination and Phase Formation of Sol-Gel Derived PbTiO₃/(Ni,Pb) Ferrite Multiphase Powders

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