Conduction—Ionic or Electronic—in BaTiO3

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Abstract
Conduction in single crystal and ceramic BaTiO3 has been investigated using a concentration cell and activation analysis.Ionic conduction occurs near 100°C in single crystals containing Fe2O3 while electronic conduction predominates in ``pure'' crystals from 100° to 600°C. Ceramic samples conduct predominately ionically at 100°C and electronically at 500°C. It is found that the iron ion is mobile in single crystals and that the titanium ion is immobile.

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