Quartz SiO2

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Crystals
Quartz SiO2
Berlinite AlPO4
Gallium orthophosphate GaPO4
Turmaline
Ceramics
Barium titanate BaTiO3
Lead zirconate titanate PZT

Other materials
Zinc oxide ZnO
Aluminum nitride AlN
Polyvinylidene fluoride PVDF
More piezo materials

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Quartz SiO2

Introduction

The trigonal crystallized silica of SiO2 is known as Quartz and is one of the most common crystals on earth's surface. It has an hexagonal structure made of , piezo quartz

Properties

Quartz is a very pure crystal and contains only traces of other elements. Natural quartz contain:

Al3+: 13 to 15,000 ppm, usually only 100 ppm

Fe3+:

Ti4+:

P5+:

H+:

Li+:

Na+: 9 to 1400 ppm

K+: 3 to 300 ppm

Density: 2.65 g/cm3

Mineral class: Oxides/hydroxides

Piezoelectricity

Quartz shows a strong piezoelectric effect perpendicularly to the prism axis. Applying pressure on a quartz crystal generates an electrical polarization along the pressure direction. Alternatively, applying an electrical tension leads to a mechanical deformation of the crystal.