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Study of the Defect Structure Effect on Electrical Conductivity in Nonstoichiometric Lithium Tantalate
並列摘要
An analysis of ceramics specimens of LiTaO3 indicates that there is a modification of the conductivity with different nonstoichiometric compositions. To understand the mechanism responsible in this phenomenon, we have proposed a theoretical description of the defect structure in LiTaO3 on the basis of the lithium and tantalate vacancy models combined with a ferroelectric phase transition theory. A comparative study between the calculated and measured values of the conductivities shows that the lithium vacancy model is the best model that has been suggested for describing the defect structure in nonstoichiometric lithium tantalate.
並列關鍵字
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