IEVref: 815-17-13 ID: Language: en Status: Standard Term: AC magnetic susceptibility Synonym1: Synonym2: Synonym3: Symbol: Definition: series of complex coefficients obtained by the expansion in Fourier series of the AC magnetization M(t)Note 1 to entry: The AC magnetization, M(t), under the magnetic field strength of ${h}_{0}\mathrm{cos}\omega t$ is expanded as: $M\left(t\right)={h}_{0}\sum _{n=0}^{\infty }\left[{\kappa }_{n}^{\prime }\mathrm{cos}\left(n\omega t\right)+{\kappa }_{n}^{″}\mathrm{sin}\left(n\omega t\right)\right]$ where ${\kappa }_{n}^{\prime }$ and ${\kappa }_{n}^{″}$ are the real and imaginary parts of the AC magnetic susceptibility for the order n. Note 2 to entry: The fundamental components ${\kappa }_{1}^{\prime }$ and ${\kappa }_{1}^{″}$ are mostly observed for measurements of superconducting transition. Note 3 to entry: The AC loss energy density W is given as: $W=\pi {\mu }_{0}{h}_{0}^{2}{\kappa }_{1}^{″}$ Publication date: 2015-11 Source: Replaces: Internal notes: CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: