Third-Order Nonlinear Optical Properties and Dielectric Properties of Pb-Complex Perovskite Thin Films Prepared by Sol-Gel Method

被引：11

作者：

Hashimoto T. ^{[1
,2
]}

Ishibashi K. ^{[1
]}

Yoko T. ^{[1
]}

机构：

[1] Institute for Chemical Research, Kyoto University, Uji

[2] Dept. of Chemistry for Materials, Faculty of Engineering, Mie University, Kamihama, Tsu

来源：

Journal of Sol-Gel Science and Technology | 1997年 / 9卷 / 2期

关键词：

3rd-; and; 2nd-NLO; Dielectric constant; Ferroelectric Pb-complex perovskites; Morphotropic phase boundary; Sol-gel method;

D O I：

10.1007/BF02439400

中图分类号：

学科分类号：

摘要：

The third-order nonlinear optical properties of the sol-gel derived Pb(Fe1/2Nb1/2)O3-PbTiO3 (PFN-PT) thin films have been investigated by the THG method. The χ(3) values of PFN-PT thin films increased from 3.2 × 10-12 esu (PT) to 8.5 × 10-12 esu (PFN) with increasing content of Fe3+ ions which possessed very high second-hyperpolarizability, γ(Fe2/3O). It was experimentally confirmed that complex oxides such as ABO3-type perovskites consisting of large non-transition metal A-site cations and small transition metal B-site cations exhibited high χ(3) as expected from Lines' model. It was also found that the χ(3) values of complex oxides could be estimated from the second-hyperpolarizabilities of the constituent single oxides reported so far. Because of the large remanent polarization, PT thin films may exhibit the highest χ(2) among the ferroelectric PFN-PT thin films studied in the present work. The maximum dielectric constant, ε, of 1990 at room temperature was obtained for 0.5PFN·0.5PT thin films, whose composition corresponds to so-called morphotropic phase boundary (MPB).

引用

页码：211 / 218

页数：7

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