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Study on the properties of a nanocrystal and polymer composite PbTiO3/PEK-c film with optical anisotropy.
- Source :
- Journal of Materials Science; Nov2004, Vol. 39 Issue 21, p6577-6582, 6p
- Publication Year :
- 2004
-
Abstract
- Composite thin films of PbTiO<subscript>3</subscript> nanocrystals and PEK-c polymer for applications in nonlinear optical devices were prepared by spin coating. The size of PbTiO<subscript>3</subscript> nanocrystals was estimated to be 30–40 nm. The microstructure of PbTiO<subscript>3</subscript>/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 γ<subscript>33</subscript> of poled composite film was measured to be 12.89 pm V<superscript>-1</superscript> 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 F<subscript>2</subscript> 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- COMPOSITE materials
LEAD compounds
PLASTIC films
POLYMERS
NANOCRYSTALS
MICROSTRUCTURE
Subjects
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 39
- Issue :
- 21
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 14700955
- Full Text :
- https://doi.org/10.1023/B:JMSC.0000044898.04904.6c