Details

Autor(en) / Beteiligte

• Xie, Zhenkun
• Yue, Zhenxing
• Ruehl, Griffin
• Peng, Bin
• Zhang, Jie
• Yu, Qi
• Zhang, Xiaohua
• Li, Longtu

Titel

Bi(Ni1/2Zr1/2)O3-PbTiO3 relaxor-ferroelectric films for piezoelectric energy harvesting and electrostatic storage

Ist Teil von

• Applied physics letters, 2014-06, Vol.104 (24)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2014

Quelle

American Institute of Physics

Beschreibungen/Notizen

• In this Letter, we demonstrated that both a high energy-storage density and a large piezoelectric response can be attained simultaneously in relaxor-ferroelectric 0.4Bi(Ni1/2Zr1/2)O3-0.6PbTiO3 films prepared by chemical solution deposition. The as-prepared films had a pure-phase perovskite structure with an excellent crystalline morphology, featuring a moderate relative permittivity (εr ∼ 800–1100), a low dissipation factor (tan δ < 5%) and strong relaxor-like behavior (γ = 1.81). An ultra-high energy-storage density of 39.8 J/cm3 at 2167 kV/cm was achieved at room temperature. Moreover, the 0.4Bi(Ni1/2Zr1/2)O3-0.6PbTiO3 films exhibited a considerably large effective piezoelectric coefficient of 83.1 pm/V under substrate clamping, which is comparable to the values obtained for lead zirconate titanate films. Good thermal stabilities in both the energy-storage performance and the piezoelectric properties were obtained over a wide range of temperatures, which makes 0.4Bi(Ni1/2Zr1/2)O3-0.6PbTiO3 films a promising candidate for high energy-storage embedded capacitors, piezoelectric micro-devices, and specifically for potential applications in next-generation integrated multifunctional piezoelectric energy harvesting and electrostatic storage systems.