Temperature dependences of piezoelectric properties of vanadium substituted SrBi 2Nb 2O 9 ceramics with grain orientation

Abstract

The temperature dependence of the piezoelectric properties of vanadium substituted strontium bismuth niobate, SrBi 2Nb 1.95V 0.05O 9 (SBNV) ceramics, were investigated in various vibration modes. The effects of grain orientation in SBNV ceramics on the piezoelectric properties were also studied by the hot-forging (HF) method. The anisotropy of the piezoelectric properties of each vibration mode was confirmed by observing the grain orientation. In particular, HF-SBNV ceramics of the (33) and (15) modes showed excellent piezoelectric properties with relatively high mechanical quality factors, Q m (2200, 4600), and high electrical quality factors, Q e max (66.0, 21.6), respectively. In addition, HF-SBNV ceramics showed low temperature coefficients of resonance frequency TC- f r (−16.5, −27.0). HF-SBNV ceramics are considered to be superior candidates for the lead-free piezoelectric application of ceramic resonators.