Magnetoelectric properties of Tb0.27−xDy0.73−yYx+yFe2/PVDF composites

Właściwości magnetostrykcyjne kompozytów multiferroicznych

“…Jedną z grup materiałów SMM, cieszących się obecnie dużym zainteresowaniem naukowców, są materiały będące połączeniem materiałów magnetostrykcyjnych i piezoelektrycznych. Kompozyty te tworzą nową klasę materiałów funkcjonalnych nazwaną magnetoelektrykami [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Multipeak self-biased magnetoelectric coupling characteristics in four-phase Metglas/Terfenol-D/Be-bronze/PMN-PT structure

“…C The magnetoelectric (ME) composite consisting of magnetostrictive and piezoelectric components shows larger ME response than those of any natural multiferroic ME materials. [1][2][3][4][5] This ME effect in magnetostrictive/piezoelectric composites is realized by a stress-mediated mechanical coupling between the magnetostrictive and piezoelectric layers, which is often referred as a "product property." [1][2][3][4] The previous presented ME responses of magnetostrictive/piezoelectric composites at room temperature have led to the development of many multifunctional devices such as passive magnetic field sensors, electric current sensors, magnetoelectric transducers.…”

“…[1][2][3][4][5] This ME effect in magnetostrictive/piezoelectric composites is realized by a stress-mediated mechanical coupling between the magnetostrictive and piezoelectric layers, which is often referred as a "product property." [1][2][3][4] The previous presented ME responses of magnetostrictive/piezoelectric composites at room temperature have led to the development of many multifunctional devices such as passive magnetic field sensors, electric current sensors, magnetoelectric transducers. [6][7][8] Since the ME coupling in the composites is mediated by the mechanical stress, one would expect a stronger coupling when the frequency of the ac field is tuned to acoustic mode frequencies in the sample than at non-resonance frequencies.…”

“…[1][2][3][4][5][6][7][8][9] But unfortunately, the resonance peak is typically very sharp which results in a very narrow bandwidth. In addition, the previously composites only have one or two resonant peaks determined by the dimensions of magnetostrictive and piezoelectric layers.…”

“…[1][2][3][4][5][6][7][8][9][10][11][12][13] Recently, the ME composite with exchange biasing effect has shown a ME response under zero magnetic bias field. 14 The magnetic exchange occurs only at the thin interface (∼nm in thickness), so this thin ME structure is difficult to fabricate and potentially costly compared to laminate composite.…”