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Modeling of the magnetomechanical effect: Application of the Rayleigh law to the stress domain
Journal of Applied Physics
  • L. Li, Iowa State University
  • David C. Jiles, Iowa State University
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Stress is one of the principal external factors affecting the magnetization of materials. The magnetomechanical effect, that is, the change of magnetization of a magnetic material resulting from the application of stress, has attracted attention because of its scientific complexity. An improved model equation for interpreting the magnetomechanical effect has been developed based on extension of the previous equation to include the Rayleigh law. According to the previous theory of the magnetomechanical effect, which is based on the “law of approach,” application of stress induces changes in magnetization toward anhysteretic magnetization which itself is stress dependent, and the rate of change of magnetization with the input elastic energy is dependent on the displacement of the prevailing magnetization from the anhysteretic magnetization. The theory has been refined by including a linear term in the model equation in addition to the well-known quadratic term. It was found that the modified theory provides a much better description of the magnetization changes under stress, particularly at small applied stress amplitudes and when the stress changes sign.

The following article appeared in Journal of Applied Physics 93 (2003): 8480 and may be found at

Copyright 2003 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
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American Institute of Physics
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L. Li and David C. Jiles. "Modeling of the magnetomechanical effect: Application of the Rayleigh law to the stress domain" Journal of Applied Physics Vol. 93 Iss. 10 (2003) p. 8480 - 8482
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