Piezoelectric coefficient
Encyclopedia
Piezoelectric coefficient or Piezoelectric Modulus, aka D33, quantifies the volume change when a piezoelectic material
is subject to an electric field
, or the polarisation on application of a stress:
where P is polarisation, and 
is the stress.
There are actually many Piezoelectric coefficients: Dxy.
See Piezoelectricity#Mechanism.
Piezoelectricity
Piezoelectricity is the charge which accumulates in certain solid materials in response to applied mechanical stress. The word piezoelectricity means electricity resulting from pressure...
is subject to an electric field
Electric field
In physics, an electric field surrounds electrically charged particles and time-varying magnetic fields. The electric field depicts the force exerted on other electrically charged objects by the electrically charged particle the field is surrounding...
, or the polarisation on application of a stress:
where P is polarisation, and is the stress.There are actually many Piezoelectric coefficients: Dxy.
See Piezoelectricity#Mechanism.