A new approach to modeling the magnetomechanical effect

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Jiles, David
Li, L.
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Jiles, David
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Ames National Laboratory

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Materials Science and Engineering
Materials engineers create new materials and improve existing materials. Everything is limited by the materials that are used to produce it. Materials engineers understand the relationship between the properties of a material and its internal structure — from the macro level down to the atomic level. The better the materials, the better the end result — it’s as simple as that.
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Ames National LaboratoryMaterials Science and EngineeringCenter for Nondestructive Evaluation

This paper reports on results taken to validate the extension to the theory of the magnetomechanical effect reported recently. This theory is based on a “law of approach” but the underlying equations have been generalized to include linear and nonlinear terms which are analogous to those in the well-known Rayleigh law of magnetization. It is shown that the generalized theory can be applied to materials with negative magnetostriction, such as nickel, and that the stress dependent model parameters can be determined from experimental measurements. It has been found that the results show improved agreement with experimental observation compared with the more restricted previous exposition of the model.


The following article appeared in Journal of Applied Physics 95, 11 (2004); 7058, and may be found at doi: 10.1063/1.1687200.

Thu Jan 01 00:00:00 UTC 2004