The anomalous dielectric behavior of mixed valence system LuFe2O4 is investigated. It has been shown that LuFe2O4 undergoes successive phase transitions associated with ordering of charge configuration of Fe ion following the sequence of disorder → 2D-CDW (charge density wave) → 3D-CDW state. The stable 3D-CDW phase is characterized by a long period incommensurate antiferroelectric phase. The anomalously high dielectric constant at lower temperature as well as its frequency dependence is discussed in connection with the motion of the antiphase domain boundaries.
|Journal||Journal of the Korean Physical Society|
|Issue number||SUPPL. 1|
|Publication status||Published - Feb 1998|
ASJC Scopus subject areas
- Physics and Astronomy(all)