论文信息 - Magnesium and zinc cation distributions and correlation with curie temperature in some LiTaO3-based ferroelectric ceramics

Magnesium and zinc cation distributions and correlation with curie temperature in some LiTaO3-based ferroelectric ceramics

Abstract Nonstoichiometric ferroelectric ceramics based on LiTaO3 have been sintered at relatively low temperature. The corresponding phases belong to theLi2O-Ta2O5-MO(M =Mg, Zn) systems. A correlation between the calculated electric field gradient seen by Li nuclei and the quadrupole splitting of7Li NMR line shape allows the authors to localize the Mg or Zn atoms in either the octahedral or tetrahedral sites of the crystalline network. These results have been correlated to the corresponding Curie temperatures determined in parallel by dielectric measurements.

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