Effect of the Metal Oxides Additives on the Electrical Properties of β -Eucryptite Ceramics | ||||
Egyptian Journal of Solids | ||||
Article 4, Volume 26, Issue 2, 2003, Page 151-164 PDF (925.81 K) | ||||
DOI: 10.21608/ejs.2003.150147 | ||||
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Abstract | ||||
The dc electrical conductivity and thermally stimulated discharge current (TSDC) studies have been made on pure and modified β-eucryptite with TiO2, Fe2O3 and CuO in the temperature range 303 – 423 K . The calculated values of activation energy and ionic transference number from dc electrical conduction indicate the presence of ionic character in the investigated samples. The global TSDC spectra studies point to a superposition of dipole orientation and space charge effects. With the aid of the thermal sampling technique, the complex spectrum could be resolved into its elementary processes. The compensation effects is observed to be valid and the values of the compensation temperature and time are found to be 356 K and 1.18 sec respectively. | ||||
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