Details

Autor(en) / Beteiligte

• Li, Wei
• Wu, Ze
• Shan, Lian Wei
• Wang, Lai Guo
• Fu, Xing Hua
• Hou, Wen Ping
• Han, Zhi Dong
• Dong, Li Min

Titel

Study on Microstructure and Ferroelectricity of Strontium Barium Titanate Thin Films Prepared by Sol-Gel Processing

Ist Teil von

• Applied Mechanics and Materials, 2013-05, Vol.320, p.202-207

Ort / Verlag

Zurich: Trans Tech Publications Ltd

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Sr0.5Ba0.5-xBixTiO3 (SBT) thin films were fabricated on a Pt/SiO2/Si substrate by sol-gel method. The effects of chelating agent acetylacetone (HAcHAc) on the formation temperature and the microstructure of Sr0.5Ba0.5-xBixTiO3 (SBT) thin films were investigated in this paper. The microstructure of BST thin films was examined by XRD and TEM. It is found that Bi3+ doping decreases dielectric loss, improves frequency dispersion for BST thin films. The peak of temperature-dependence of dielectric constant of Bi3+-doped BST thin films is compressed and moves to a low-temperature region. An inclined angle of approximately 1.8o between the two different polarization vectors was observed for BST thin film from the results of high-resolution transmission electron microscopy (HRTEM). The Pr, Ps and Ec was 0.22μC/cm2, 0.72μC/cm2 and 60Kv/cm respectively for Sr0.5Ba0.485Bi0.015TiO3 thin film at 100Hz, 20V.