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Frequency dependence of the piezomagnetic strain coefficient

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3 Author(s)
Reed, I.M. ; Dept. of Appl. Phys., Hull Univ., UK ; Greenough, R.D. ; Jenner, A.G.I.

The frequency dependence of the piezomagnetic strain coefficient (g33) has been investigated through Plane Wave Model characterisation of a Terfenol-D sample. It is found to have a frequency dependence of 1/√ω with a corresponding frequency dependent loss term. It is proposed that this frequency dependence in g33 is a consequence of the mechanical defects in the material which affect the magnetic properties of the material through the magnetomechanical coupling k33

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Magnetics, IEEE Transactions on  (Volume:31 ,  Issue: 6 )