We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Study on the properties of a nanocrystal and polymer composite PbTiO<sub>3</sub>/PEK-c film with optical anisotropy.
- Authors
Xu, D.; Ren, Q.; Chu, P. L.; Chow, Y. T.; Chan, H. P.; Cheng, S. Y.; Chow, B.; Guo, S. Y.; Yang, H. L.
- Abstract
Composite thin films of PbTiO3 nanocrystals and PEK-c polymer for applications in nonlinear optical devices were prepared by spin coating. The size of PbTiO3 nanocrystals was estimated to be 30–40 nm. The microstructure of PbTiO3/PEK-c composite polymer film before and after poling was analyzed by X-ray diffraction, which show that this film is c axis-orientated. The poled composite film displayed the refractive index anisotropy. In this sample the TE- and TM-indices differences are found to be 0.02945 for 633 nm and 0.03915 for 414 nm. The electro-optic coefficient γ33 of poled composite film was measured to be 12.89 pm V-1 at 633 nm by the transmission technique. The dielectric constant ε of it at 100 KHz under room temperature was determined to be 7.32. The figure of merit F2 was estimated to be 492. In addition, a relaxation process was observed in the time range of 28 days and the relaxation time constant was calculated to be 2393 min.
- Subjects
COMPOSITE materials; LEAD compounds; PLASTIC films; POLYMERS; NANOCRYSTALS; MICROSTRUCTURE
- Publication
Journal of Materials Science, 2004, Vol 39, Issue 21, p6577
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1023/B:JMSC.0000044898.04904.6c