Magnetoelectric behavior of Terfenol-D composite and lead zirconate titanate ceramic laminates

Five magnetoelectric laminates of polymer-bonded Terfenol-D magnetostrictive composite (i.e., volume fractions (V,) ranging from 0.16 to 0.48) and lead zirconate titanate (PZT-5H) piezoelectric ceramic were fabricated. The measured quasistatic magnetoelectric voltage coefficient (alpha(E)) increased gradually with increasing V-p and approached saturation for V-p > 0.4 due to increased elastic modulus and piezomagnetic coefficient of the magnetostrictive phase. A maximum alpha(E) of 2.7 V/cm (.) Oe was observed at a magnetic bias field (H-Bias) of 53 kA/m for the laminate with V-p = 0.48. alpha(E) was found to be a fairly linear function of H-Bias at 100-220 kA/m bias for all V-p values. dalpha(E)/dH(Bias) as a function of H-Bias was found to increase with increasing V-p for H-Bias values of 100-220 kA/m.