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