摘要
在MgO(100)基片上利用脉冲激光沉积技术制备了掺有Ag纳米颗粒的BaTiO3复合薄膜.通过X射线衍射对薄膜的结构进行了表征,利用透射电子显微镜对Ag纳米颗粒的尺寸、形态进行了观测,X射线光电子能谱结果表明Ag呈金属态.在410—500nm范围内观测到了Ag纳米颗粒引起的等离子振荡峰,随着后处理温度和Ag颗粒浓度的增加,吸收峰发生红移,并出现了双峰现象.
Nanocomposite films composed of Ag particles embedded in BaTiO3 matrix were grown on MgO（100） substrates by pulsed laser deposition. The structures of the films were determined by X-ray diffraction. The size and shape of the Ag particles were observed by transmission electron microscopy. The X-ray photoelectron spectroscopy results showed that Ag is in the metallic state. The optical absorption properties were measured from 300 to 800 nm, and the absorption peaks due to the surface plasmon resonance of Ag particles were observed. With increasing annealing temperature and Ag concentration, the peak absorption increased and shifted to longer wavelength （red-shift）.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第8期4342-4346,共5页
Acta Physica Sinica
基金
国家自然科学基金(批准号:5001161952)资助的课题.~~
关键词
金属纳米复合薄膜
激光沉积
光吸收
metal nanocomposite films, laser deposition, optical absorption
