Reversible magnetization and Lorentzian function approximation

@article{Azzerboni2003ReversibleMA,
  title={Reversible magnetization and Lorentzian function approximation},
  author={B. Azzerboni and E. Cardelli and E. Torre and G. Finocchio},
  journal={Journal of Applied Physics},
  year={2003},
  volume={93},
  pages={6635-6637}
}
The paper proposes the use of a Lorentzian function to describe the irreversible component of the magnetization of soft materials with hysteresis using the Everett’s integral. We will derive an analytical formula to compute the irreversible magnetization, and compute the reversible component by the measurements of the major loop. We shall compare the numerical results with experiments on not-oriented-grain magnetic irons. 
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