Dielectrics

The following sections are included:

• Introduction

• Fundamentals

  • Permittivity or dielectric constant ε

  • Tangent of loss angle

  • Dielectric strength

  • Dipole and polarisation

    • Dipole

    • Polarisation

      • Electronic polarisation

      • Ionic polarisation

      • Molecular polarisation

      • Space charge polarisation

  • Frequency, temperature dependence of ε_r and energy loss

    • Relaxation frequency

    • Temperature effect

    • Energy loss in dielectrics

• Dielectric Materials

  • Classification of dielectric materials

  • General applications

• Case Study – Capacitors

  • Functions of capacitors

  • Capacitor materials

  • Type of capacitors

• Ferroelectric Materials

  • Fundamentals and materials

  • Applications

• Piezoelectric Materials

• Pyroelectric Materials

• Case Study – Materials for Transducers

  • Piezoelectric transducers for acoustical systems

  • Pyroelectric transducer for a burglar detector