A technique for analysis of the electric modulus spectrum of dielectric ceramics based on the elimination of the direct current conductivity (σ dc ) contribution has been developed. Expressions are given for the real (M′ ac ) and imaginary (M′′ ac ) parts of the complex electrical modulus related only to the dielectric polarization and not containing the contribution of σ dc . The frequency dependence of M′′ ac and the M′′ ac – M′ ac diagram for BiMg1/2Ti1/2O3 and BiMg1/2Zr1/2O3 perovskite ceramics are analyzed.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 76, No. 4, pp. 547–551, July–August, 2009.
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Olekhnovich, N.M., Pushkarev, A.V. & Radyush, Y.V. Dielectric properties of BiMg1/2Ti1/2O3 and BiMg1/2Zr1/2O3 perovskite ceramics with elimination of the contribution for direct current conductivity. J Appl Spectrosc 76, 518–522 (2009). https://doi.org/10.1007/s10812-009-9228-5
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DOI: https://doi.org/10.1007/s10812-009-9228-5