Deng Zhao, Dai Ying, Chen Wen, Pei Xinmei, Liao Jihong
Nanoscale Res Lett. 2010 Jul;5(7):1217-1221. doi: 10.1007/s11671-010-9629-7. Epub 2010 May 16.
Novel bowl-like single-crystalline BaTiO(3) nanoparticles were synthesized by a simple hydrothermal method using Ba(OH)(2)·8H(2)O and TiO(2) as precursors. The as-prepared products were characterized by XRD, Raman spectroscopy, SEM and TEM. The results show that the bowl-like BaTiO(3) nanoparticles are single-crystalline and have a size about 100-200 nm in diameter. Local piezoresponse force measurements indicate that the BaTiO(3) nanoparticles have switchable polarization at room temperature. The local effective piezoelectric coefficient d(33)(*) is approximately 28 pm/V.
采用简单水热法,以Ba(OH)₂·8H₂O和TiO₂为前驱体合成了新型碗状单晶BaTiO₃纳米颗粒。通过X射线衍射、拉曼光谱、扫描电子显微镜和透射电子显微镜对所制备的产物进行了表征。结果表明,碗状BaTiO₃纳米颗粒为单晶,直径约为100 - 200 nm。局部压电力响应测量表明,BaTiO₃纳米颗粒在室温下具有可切换的极化特性。局部有效压电系数d(33)*约为28 pm/V。