Determination of the optical dispersion in ferroelectric vinylidene fluoride (70%)/trifluoroethylene (30%) copolymer Langmuir-Blodgett films

被引:64
作者
Bai, MJ
Sorokin, AV
Thompson, DW
Poulsen, M
Ducharme, S [1 ]
Herzinger, CM
Palto, S
Fridkin, VM
Yudin, SG
Savchenko, VE
Gribova, LK
机构
[1] Univ Nebraska, Dept Phys & Astron, Ctr Mat Res & Anal, Lincoln, NE 68588 USA
[2] Ivanovo State Univ, Dept Phys, Ivanovo 153025, Russia
[3] Univ Nebraska, Dept Elect Engn, Ctr Mat Res & Anal, Lincoln, NE 68588 USA
[4] JA Woollam Co, Lincoln, NE 68508 USA
[5] Russian Acad Sci, Inst Crystallog, Moscow 117333, Russia
[6] State Inst Machinery Res & Dev NIEKMI, Ivanovo 153012, Russia
关键词
D O I
10.1063/1.1649464
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report measurements of the optical dispersion in ferroelectric Langmuir-Blodgett films of polyvinylidene fluoride (70%)-trifluoroethylene (30%) copolymer, using variable-angle spectroscopic ellipsometry over a wide spectral range from infrared to ultraviolet. Film thickness averaged 1.78+/-0.07 nm per deposition layer for films ranging from 5 to 125 deposition layers as determined from multi-sample analysis. This deposition rate was consistent with capacitance measurements, yielding a dielectric constant of 9.9+/-0.4 normal to the film, by quartz microbalance measurements, and by atomic force microscopy. (C) 2004 American Institute of Physics.
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页码:3372 / 3377
页数:6
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