Electric Susceptibility
A dimensionless material property measuring the degree of electric polarization induced in a dielectric material by an applied electric field.
Governing formula
P = ε₀ χ_e E, ε_r = 1 + χ_e
SI unit
Dimensionless
In depth
Quantifies the ease with which atomic dipoles align under external electric fields. High susceptibility directly increases relative permittivity ε_r and energy storage capability.
Examples in the real world
High-susceptibility barium titanate ceramic dielectrics used in high-capacitance multilayer ceramic capacitors (MLCCs).