L7 Intrinsic properties

Mechanical stiffness measurement - how do we normalise strain and stress

Stress is measured as force over area and strain is measured as fractional change in length

Stiffness of a bond

Extending the stiffness of a bond to a macroscopic material

Thermal expansion relation to bond stiffness

Thermal conductivity relations

Plot for stiffness vs thermal conductivity

Dielectric materials

Polarisation of a material placed in the gap - relative permittivity

Polarisation of the dielectric

Dielectric strength

What are piezoelectrics

Piezoelectric examples

What is the Curie temperature

Pyroelectrics

Ferroelectrics

Perovskites: ferroelectrics

Ferroelectrics - temperature effect on polarisation

Ferroelectric lattice distortion