Optical second-harmonic-generation probe of two-dimensional ferroelectricity

Optical second-harmonic-generation probe of two-dimensional ferroelectricity
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DOI:
10.1364/ol.25.000411
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发表时间:
2000-03-15
期刊:
影响因子:
3.6
通讯作者:
Palto, SP
Palto, SP
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Aktsipetrov, OA;Misuryaev, TV;Palto, SP

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利用光学二次谐波产生技术(SHG)对偏氟乙烯与三氟乙烯共聚物LB膜的二维铁电性进行了非侵入性研究。在温度研究中观察到的表面2D铁电-顺电相变的LB膜的最上层和厚度无关的(几乎2D)在这些膜的大部分转变。(C)2000年美国光学学会OCIS代码:190.4350、190.4710、190.2620、240.0310、310.3840。
Optical second-harmonic generation (SHG) is used as a noninvasive probe of two-dimensional (2D) ferroelectricity in Langmuir-Blodgett (LB) films of the copolymer vinylidene fluoride with trifluoroethylene. The surface 2D ferroelectric - paraelectric phase transition in the topmost layer of the LB films and a thickness-independent (almost 2D) transition in the bulk of these films are observed in temperature studies of SHG. (C) 2000 Optical Society of America OCIS codes: 190.4350, 190.4710, 190.2620, 240.0310, 310.3840.