μ_0.08 or mu0.08 - a value approximating initial magnetic permeability μ_i obtained by measuring the amplitude magnetic permeability at the excitation of magnetic field strength H = 0.08 A/m.¹⁾

This value is often given as absolute permeability in the units of H/m rather than as relative (unitless). Additionally, because of the typical small numerical value the units are expressed in millihenry per metre, for example μ_0.08 = 43.8 mH/m = 0.0438 H/m.²⁾³⁾ Such value would be equivalent to relative permeability of μ_r = μ_0.08 / μ₀ = 34 900 (where μ₀ is the absolute magnetic permeability of vacuum).

• Types of magnetic permeability