A strong magnetoelectric voltage gain effect in magnetostrictive-piezoelectric composite

Abstract

A strong magnetoelectric voltage gain effect in magnetostrictive-piezoelectric composite," Appl. Phys. Lett. 85, 3534 (2004); http:// dx

Giant magnetoelectric effect in Metglas/polyvinylidene-fluoride laminates

“…Lowering of this required H dc,opt by use of an alternative magnetostrictive phase is an important goal, which would enable laminate miniaturization for applications in magnetic sensing 17 and transducer. 18 Here, we report new ME laminates made of small strain but high magnetic permeability ͑ r Ͼ 40 000͒ Metglas 19 layer͑s͒ laminated together with piezopolymer PVDF ones ͑with a high piezoelectric voltage constant͒. Such laminates have giant ME voltages under dramatically lower magnetic biases than previously reported for other material layer couples.…”

Small dc magnetic field response of magnetoelectric laminate composites

“…Experiments were performed at a lower-frequency ͑10 3 Hz͒ drive of 1 Oe; and at higher frequencies ͑ϳ8 ϫ 10 4 Hz͒ under resonant drive conditions of H ac = 0.1 Oe, where a significant gain in the ME effect is known. 19 The dc magnetic signal is coupled to the ac voltage response; as for 0 Ͻ H dc Ͻ 300 Oe, the ME voltage coefficient ͑␣ ME ͒ is known to be linearly proportional to H dc ͑␣ ME = aH dc , where a is a constant͒. Accordingly, this is an unusual magnetic sensor as variations in a dc signal ͑H dc ͒ can be detected as changes in an ac response ͑V ac ͒-enabling sensitivity at near-static frequencies.…”

Structural, magnetic, and electric properties of La0.7Sr0.3MnO3/PbZrxTi1−xO3 heterostructures

“…[7][8][9][10][11] Moreover, in laminates based on Terfenol-D ͑Tb 1−x Dy x Fe 2−y ͒ and PbZr x Ti 1−x O 3 very high values of the magnetoelectric coupling constant were found. 12,13 This is in the line of general interest in PbZr x Ti 1−x O 3 heterostructures since this material has excellent ferroelectric and piezoelectric properties making it of potential use for nonvolatile random access memories. 14,15 An additional degree of versatility of PbZr x Ti 1−x O 3 lies in the tunability of the lattice parameter and physical properties due to the Zr/Ti composition ratio.…”