$Fe_2O_3$가 첨가된 $Pb(Ni_{1/3}Nb_{2/3})O_3$ - $PbTiO_3$ - $PbZrO_3$ 세라믹의 바이몰프 액츄에이터를 이용한 에너지 하베스팅

Energy Harvesting from the Bimorph Actuator using $Fe_2O_3$ Added $Pb(Ni_{1/3}Nb_{2/3})O_3$ - $PbTiO_3$ - $PbZrO_3$ Ceramics

$Fe_2O_3$ added Pb$(Ni_{1/3}Nb_{2/3})O_3-PbTiO_3-PbZrO_3 $ (PNN-PT-PZ) ceramics were produced in order to use them as a bimoph acturator for energy harvesting. Especially, the 0.25 wt% $Fe_2O_3$ added 0.4PNN-0.357PT-0.243PZ, having the composition of morphotropic phase boundary, showed good piezoelectric properties of $d_{33}$ of 810 pC/N, $k_p$ of 77% and $Q_m$ of 55 along with a high Curie temperature of $210^{\circ}C$. A bimorph actuator, composed of the two piezoelectric layers bonded together with a phosphorous bronze layer as a central metallic electrode, was successfully fabricated. The bimorph actuator, vibrated with a 1.3 mm amplitude at 68 Hz, produced high electric power of approximately 60 mW.