Dielectric properties of the solid solution formed in the system LiTaO3-`Li2MnO4'
Por:
Villafuerte-Castrejon M.E., Pineda J.L., Huanosta A.
Publicada:
1 ene 1993
Resumen:
Impedance spectroscopy methods were used to characterize the electrical properties of the solid solution formed in the system LiTaO3-`Li2Mn4O9'. Involved parameters were calculated using equivalent circuits. Activation energy values were decreasing from around 1.3 eV for lowest concentration of Mn4+ until around 0.8 eV for higher Mn4+ contents. Results will be discussed in terms of Z? vs Z? and Arrhenius plots. The ferroelectric character was established using the real part of the permittivity against temperature. Curie temperature values Tc were found decreasing toward higher concentration of Mn4+ in the range 630-580 °C.
Filiaciones:
Villafuerte-Castrejon M.E.:
Univ Nacional Autonoma de Mexico, Apdo Postal, Mexico
Pineda J.L.:
Univ Nacional Autonoma de Mexico, Apdo Postal, Mexico
Huanosta A.:
Univ Nacional Autonoma de Mexico, Apdo Postal, Mexico
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