PIEZOELECTRIC RESONATORS OF INPFE

Piezoelectric resonators in the form of rectangular platelets of semii nsulating InP:Fe were produced by cleaving along direction {011} to ex cite fundamental longitudinal modes of vibrations. The analysis of the transfer function of such resonators in the region around resonance f requencies delivered such parameters as elastic modulus and piezoelect ric coefficients of InP, which could be compared with values from lite rature. The pertinent elastic modulus agrees within 1.6%, whereas the value of piezoelectric coefficient \e14\ = (1.3 +/- 20%) C/m2 is appro ximately three times higher than the older experimental value, but lie s nearer to some theoretical predictions and to a recent experimental value.