Electroacoustic properties of <110>-oriented Pb(Mg[sub 1/3]Nb[sub 2/3])O[sub 3]–PbTiO[sub 3] crystals under uniaxial stress

Viehland, D.; Li, J. F.; Gittings, K.; Amin, A.
July 2003
Applied Physics Letters;7/7/2003, Vol. 83 Issue 1, p132
Academic Journal
The electromechanical properties of 〈110〉-oriented 0.7Pb(Mg[SUB1/3]Nb[SUB2/3]O[SUB3]- 0.3PbTiO[SUB3] crystals have been investigated under uniaxial stress σ. 〈110〉-oriented crystals have a longitudinal electromechanical coupling coefficient (k[SUB33]) of ∼0.9 and an acoustic power density of 12 dB which decreases to 8 dB with increasing s between 0 and 4×10[SUP7] N/m[SUP2]. The results demonstrate that the advantages in terms of power density and coupling coefficient of oriented piezocrystals are not constrained to the 〈001〉-orientation, but rather can also be obtained along the 〈110〉.


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