The most important of the g and d constants for these materials are subscripted one five, three one, and three three; the latter d constant is negative for the polymer PVDF.
The most important of the g and d constants for these materials are subscripted one five, three one, and three three; the latter d constant is negative for the polymer PVDF. Some of these materials can have ideal properties around the phase transition between the tetragonal and the rhombohedral phases, the morphotropic phase boundary. Important characteristics of these materials include the coupling factor k squared and the mechanical quality factor big Q sub m. Barium titanate and PZT are commonly used types of these materials. These materials transition to dielectric above the Curie temperature because they can no longer sustain polarization. For 10 points, identify this phenomenon exhibited by quartz, in which mechanical stress applied to a material generates an electric potential.
The most important of the g and d constants for these materials are subscripted one five, three one, and three three; the latter d constant is negative for the polymer PVDF.
piezoelectric materials [or ferroelectric materials; or word forms]