Characterization of Electrical Materials, Especially Ferroelectrics, by Impedance Spectroscopy

A review is given of some of the problems encountered in the analysis and interpretation of impedance data. The importance of choosing the correct equivalent circuit to represent the data is emphasized and it is shown how ferroelectric materials, with their characteristic temperature-dependent capacitance, are particularly suited to discriminating between plausible equivalent circuits. Results are discussed for two materials, LiTaO3 single crystal and BaTiO3 ceramics.

[1]  A. West,et al.  A new method for analysing the a.c. behaviour of polycrystalline solid electrolytes , 1975 .

[2]  A. West,et al.  Curie-Weiss behavior in polycrystalline barium titanate from ac measurements , 1989 .

[3]  R. J. Grant,et al.  Conductivity dispersion in single-crystal β-alumina electrolyte , 1977, Nature.

[4]  A. West,et al.  Impedance and modulus spectroscopy of polycrystalline solid electrolytes , 1976 .

[5]  D. Sinclair,et al.  Impedance and modulus spectroscopy of semiconducting BaTiO3 showing positive temperature coefficient of resistance , 1989 .

[6]  P. Bruce,et al.  The A‐C Conductivity of Polycrystalline LISICON, Li2 + 2x Zn1 − x GeO4, and a Model for Intergranular Constriction Resistances , 1983 .

[7]  Rosario A. Gerhardt,et al.  Impedance and dielectric spectroscopy revisited: Distinguishing localized relaxation from long-range conductivity , 1994 .

[8]  A. Jonscher Dielectric relaxation in solids , 1983 .

[9]  West,et al.  Electrical properties of a LiTaO3 single crystal. , 1989, Physical review. B, Condensed matter.

[10]  Anthony R. West,et al.  Impedance Spectroscopy of Undoped BaTiO3 Ceramics , 1996 .

[11]  Anthony R. West,et al.  Ionic conductivity of Li4SiO4 solid solutions in the system Li2O-Al2O3-SiO2 , 1983 .

[12]  D. Sinclair,et al.  Effect of atmosphere on the PTCR properties of BaTiO3 ceramics , 1994, Journal of Materials Science.

[13]  W. Kenan,et al.  Impedance Spectroscopy: Emphasizing Solid Materials and Systems , 1987 .