Citation:
Record P, Popov C, Fletcher J, Abraham E, Huang Z, Chang H, Whatmore RW, Direct and converse magnetoelectic effect in laminate bonded Terfenol-D-PZT composites, Sensors and Actuators B-Chemical, Volume 126, Issue 1, 2007, Pages 344-349.
Abstract:
Results from measurements of the direct and converse magnetoelectric (ME) effect
on a three-layer, epoxy-bonded, laminate composite are presented. The laminae
are a single transversely polarized piezoelectric elements (PZ29) sandwiched
between two longitudinal-magnetic ally polarized magnetostrictive TD elements
(Terfenol-D-TX GMM). The direct ME effect was determined by measuring laminate
output with a Helmholtz-generated AC field (up to 7 Oe) in the range 50 Hz-100
kHz biased by a DC field (0-1000 Oe). Peak voltage output occurred at the
sample's mechanical resonant frequency, its value depending on the strength and
direction of the applied magnetic field. The peak output was 3061 mV at 3 Oe AC
field and 1000 Oe bias, equivalent to 74.4 V cm(-1) Oe(-1). The peak output
coefficient, however, was 93.6 V cm(-1) Oe(-1) at 0.1 Oe AC field and 1000 Oe DC
bias. The reduction at higher drive amplitudes was attributed to increased
Young's modulus of the TD phase. Anomalous peaks in the low frequency spectrum
of sample's output are explained. The converse magnetoelectric effect was
measured by recording the voltage induced in a solenoid encompassing the ME
while exposed to a DC bias field and the PZ phase driven by a 10 VAC source. The
peak output is shown to depend on the strength of the applied DC magnetic field
and developed a maximum field of 15.4 Oe at the sample's mechanical resonant
frequency. This equates to a converse magnetoelectric coefficient of 55 Oe cm kV
(-1) (c) 2007 Elsevier B.V. All rights reserved.
