Preparation and characteristics of seeded epitaxial (Sr,Ba)Nb2O6 optical waveguide thin films using sol-gel method

被引：4

作者：

Koo, J ^{[1
]}

Jang, JH ^{[1
]}

Bae, BS ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Lab Opt Mat & Coating, Taejon 305701, South Korea

来源：

JOURNAL OF MATERIALS RESEARCH | 2001年 / 16卷 / 02期

关键词：

D O I：

10.1557/JMR.2001.0065

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Highly c-axis-oriented (Sr,Ba)Nb2O6 (SBN) films were grown on a seeded MgO(100) substrate via sol-gel method. The substrate was preseeded with epitaxial islands of SBN made by breaking up a continuous film into single-crystal islands by pores. Since the number of epitaxial nuclei was increased at the interface between the film and the substrate, the film on a seeded substrate had better highly orientation than that on unseeded substrate. The film having low Sr content exhibited better epitaxial growth because of the distorted unit-cell network and the change of lattice parameters of SBN thin film. For obtaining excellent optical properties, SBN:75 film was prepared on MgO substrate with SBN:25 composition seed layer. Because of low birefringence of refractive indices in the film having high Sr content, the optical scattering loss by the anisotropy of refractive indices was suppressed.

引用

页码：430 / 436

页数：7