Circumferential-mode, quasi-ring-type, magnetoelectric laminate composite—a highly sensitive electric current and∕or vortex magnetic field sensor

Abstract

; et al., "Circumferential-mode, quasi-ringtype, manetoelectric laminate composite -a highly sensitive electric current and/or vortex magnetic field sensor," Appl. Phys. Lett. 86, 182506 (2005); http://dx

Fe – Ga ∕ Pb ( Mg 1 ∕ 3 Nb 2 ∕ 3 ) O 3 – Pb Ti O 3 magnetoelectric laminate composites

“…It is relevant to note that the maximum value of ‫ץ‬V ME L,L / ‫ץ‬H that we report here for Fe-20%Ga/PMN-PT laminates is ϳ4ϫ higher than that for L-L configurations of Fe-20%Ga/PZT. 10 It is also comparable to that of L-L or C-C configurations of Terfenol-D/PMN-PT, 20,22 and ϳ10ϫ higher than that for L-T configurations of Terfenol-D/ PZT or Terfenol-D/PMN-PT ones. 21 A long-type laminate favors the optimum combination of magnetostrictive and piezoelectric effects; in particular, the longitudinal magnetostrictive strain of Fe-20%Ga, and the longitudinal piezoelectric strain of PMN-PT are higher, than the corresponding transverse ones.…”

Electromagneto-mechanical fields of giant magnetostrictive/piezoelectric laminates under concentrated load

“…On the other hand, piezoelectric materials, especially lead zircornate titanate (PZT), are widely used in smart structures due to their high bandwidth, high output force, compact size, and high power density. Magnetoelectric (ME) composites require magnetostrictive and piezoelectric materials, with a strong coupling between them, and many applications of these composites such as magnetic field sensing devices [3,4], coil-less transformers, tunable microwave and read/write devices [5] are currently under investigation.…”

Harvesting magnetic energy using extensional vibration of laminated magnetoelectric plates

“…Strong ME couplings have been demonstrated. [4][5][6] Both static 7,8 and frequency dependent 9-12 ME couplings have been studied experimentally and theoretically. Potentially these new materials and structures can be used for magnetic field sensors, current sensors, energy harvesters, transformers, and ME filters, as well as phase shifters.…”