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(B1/3/Nb2/3) (B=Mg, Zn, Cu) co-substituting for Ti4+ in B-site of Bi4Ti3O12-based Aurivillius ceramics were prepared to improve the piezoelectric properties. The electrical properties and conduction mechanisms of them were investigated. The activation energy related with the electrical relaxation determined from the electric modulus spectra was 0.71eV and the electrical conductivity decreased dramatically...
Ba 0.6 Sr 0.4 TiO 3 –MgTiO 3 (BST–MT) composite ceramics were prepared by reaction of BST powders with molten MgCl 2 . The sintered composites exhibit a five orders of magnitude decrease in the dc resistivity as the relative humidity (RH) was increased from 5 to 92%. The ac conductivity of the samples obeys a power law at different temperatures within the frequency...
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