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

Autor:	Byeong-Soo Bae, Jae Hyeok Jang, Junmo Koo
Rok vydání:	2001
Předmět:	Materials science business.industry Mechanical Engineering Science and engineering Strontium barium niobate Condensed Matter Physics Epitaxy chemistry.chemical_compound chemistry Mechanics of Materials Optoelectronics General Materials Science Thin film business Deposition (law) Sol-gel
Zdroj:	Scopus-Elsevier
ISSN:	2044-5326 0884-2914
DOI:	10.1557/jmr.2001.0065
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::000eea4ebdba265656a5aaba92ee1f4a https://doi.org/10.1557/jmr.2001.0065 Zobrazit plný text záznamu Full text from SpringerLink