Mumbai university > FE > SEM 1 > Applied Physics 1

Marks: 3M

Year: May 2014

• Quartz crystal has a hexagonal prism structure.

• Z-axis runs along the length of the crystal and is called optical axis.

• The physical properties repeat themselves after every 1200 rotation about Z-axis.

• The X-axis or the electric axis is parallel to a line bisecting the angles between adjacent prism faces.

• Electric polarization occurs along this direction when the mechanical pressure is applied.

• The Y-axis, which is also known as the mechanical axis, is at right angles to the face of prism and also to the X-axis.

• The deformation caused due to electric field is seen in this direction.