Characterization of (100)-oriented BiScO3-PbTiO3 thin films synthesized by a modified sol-gel method

被引：30
作者：
Wen, Hai [1 ]
Wang, Xiaohui [1 ]
Deng, Xiangyun [1 ]
Li, Longtu [1 ]
机构：
[1] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 22期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2208961
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The ferroelectric and piezoelectric properties of (100)-oriented BiScO3-PbTiO3 (BSPT) thin films were investigated. (100)-oriented 0.34BiScO(3)-0.66PbTiO(3) thin films were synthesized on Pt(111)/Ti/SiO2/Si(111) substrates using a modified sol-gel method. Saturated polarization hysteresis loops were observed, showing a remanent polarization of 33 mu C/cm(2). The dielectric constant and loss for the thin films were 1200 and 5%, respectively. The Curie temperature appeared at 435 degrees C, over 80 degrees C higher than that of the Pb(Zr,Ti)O-3 (PZT) thin films. The local effective piezoelectric coefficient d(33)(*) was approximately 70 pm/V, which was comparable to that of the highly (100)-oriented PZT thin films. (c) 2006 American Institute of Physics.
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