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Dielectric dispersion spectra of the KNN, KNLN and KNLNT ceramics measured at room temperature. (a) The real part ε′, (b) The imaginary part ε′′ of dielectric permittivity.
Dielectric dispersion spectra of the KNLNT-Sb, KNLNT-S25, and KNLNT-S50 ceramics measured at room temperature.
Evolution of dielectric dispersion spectra of the KNLNT-S50 ceramic with temperature.
Temperature dependence of f p of the KNLNT-S25 and KNLNT-S50 ceramics, in which f p corresponds to the peaks of imaginary part ε′′ of dielectric dispersion spectra. (b) the same data shown in (a) are replotted in the form of lnfp vs. 1/T. Dash line is inserted for eyes' guidance in (b).
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