Title :
Frequency dependence of the piezomagnetic strain coefficient
Author :
Reed, IM ; Greenough, RD ; Jenner, AGI
Author_Institution :
Dept. of Appl. Phys., Hull Univ., UK
fDate :
11/1/1995 12:00:00 AM
Abstract :
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
Keywords :
magnetomechanical effects; magnetostriction; Plane Wave Model characterisation; Terfenol-D sample; frequency dependence; frequency dependent loss term; magnetomechanical coupling; mechanical defects; piezomagnetic strain coefficient; Capacitive sensors; Coils; Frequency dependence; Impedance; Magnetic field induced strain; Magnetic field measurement; Magnetic flux; Magnetic materials; Magnetostriction; Strain measurement;
Journal_Title :
Magnetics, IEEE Transactions on
