TLP contents
Main pages
- Aims
- Before you start
- Introduction
- Electric dipoles
- Polarisation mechanisms
- Capacitors
- The dielectric constant
- Variation of the dielectric constant in alternating fields
- Effect of structure on the dielectric constant
- Effect of temperature on the dielectric constant
- Loss in dielectrics
- Dielectric breakdown
- Applications of dielectrics
- Summary
- Questions
- Going further
Additional pages
Media resources
- How the polarisation mechanism contributes to the polarisation of the dielectric (Flash)
- Conduction and valence bands (Flash)
- The effect of the dielectric material between the plates on capacitance (Flash)
- Illustrates how electronic polarisation, ionic polarisation and orientational polarisation mechanisms function on the microscopic scale (Flash)
- Resonance of polarisation mechanisms in alternating fields (Flash)
- Test your knowledge of factors affecting dielectric constant (Flash)
- Effect of temperature on dielectric constant (Flash)
- Dielectric constant variation with temperature (Flash)
- Energy barriers in a crystal lattice with no external electric field (image)
- Energy barriers in a crystal lattice with an external electric field (image)
- Diagram of a capacitor (image)
- Two diagrams illustrating definitions of dielectric constant (image)
- Equation for dipole moment (image)
- Equation for dipole (image)
- A capacitor (image)
- Dielectric loss is especially high around the relaxation frequencies of the polarisation mechanisms (image)
- Strain gauge image (image)
© 2004-2012 University of Cambridge.
