Details

Autor(en) / Beteiligte

• Guo Feifei
• Yang, Bin
• Zhang Shantao
• Wu Fengmin
• Liu, Danqing
• Hu Pingan
• Sun, Ye
• Wang, Dali

Titel

Enhanced pyroelectric property in (1−x)(Bi0.5Na0.5)TiO3-xBa(Zr0.055Ti0.945)O3: Role of morphotropic phase boundary and ferroelectric-antiferroelectric phase transition

Ist Teil von

• Applied physics letters, 2013-10, Vol.103 (18)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• (1−x)(Bi0.5Na0.5)TiO3-xBa(Zr0.055Ti0.945)O3 (0 ≤ x ≤ 0.12) lead-free ceramics have been prepared and the morphotropic phase boundary (MPB) is confirmed to be x = 0.06–0.09. The MPB composition x = 0.07 shows enhanced pyroelectric properties from room temperature (RT) to the depolarization temperature Td (87 °C), with the pyroelectric coefficient p = 0.057 μC/cm2 °C and the figures of merit Fi = 203 pm/V, Fv = 0.022 m2/C, and Fd = 10.5 μPa−1/2 at RT and the highest pyroelectric coefficient of 2.21 μC/cm2 °C near Td. These values are superior to other lead-based/lead-free pyroelectric ceramics. Enhanced pyroelectric properties can be explained by the effects of MPB and ferroelectric-antiferroelectric phase transition.