Synthesis of highly magnetostrictive nanostructures and their application in a polymer-based magnetoelectric sensing device

摘要

New anisotropic and highly magnetostrictive (lambda = 507 ppm) Co(II)Fe(I11)-O(OH) nanosheets were synthesized by a coprecipitation method using a modified gas-slugs microfluidic system. The magnetostrictive response of the Co(II)Fe(I11)-O(OH) nanosheets, when coupled to the piezoelectric response of P(VDF-TrFE), d(33) = -30 +/- 1 pC N-1, leads to a maximum magnetoelectric coupling alpha(31) of 5.10 mV.cm(-1) Oe(-1). The observed anisotropy in the magnetoelectric (ME) magnetic sensing mechanism combined with a new highly magnetostrictive Co(II)Fe(III)-O(OH) nanostructures and good linearity of the developed ME sensor (r(2) value = 0.995) not only allows the tailoring of the ME response for anisotropic polymer-based device applications such as digital compasses or GPS devices but also open new application directions such as actuators and in the biomedical field. (C) 2016 Elsevier Ltd. All rights reserved.