Fig. 2: Phonon analysis of KNbO3 and LiNbO3. | npj Computational Materials

Fig. 2: Phonon analysis of KNbO3 and LiNbO3.

From: Increased Curie temperature in lithium substituted ferroelectric niobate perovskite via soft polar mode enhancement

Fig. 2

Phonon spectra of pm-3m cubic phase (a) KNbO3 and b LiNbO3. Symbols P, AP, and Tri correspond to the polar mode, anti-phase polar mode, and trigonal mode, respectively. c Schematics of the displacement directions of ions in polar (P) and anti-phase polar (AP) modes in LiNbO3. Please note that the vectors do not reflect real displacement magnitude.

Back to article page