Development of highly-ordered, ferroelectric inverse opal films using sol–gel infiltration

Autor:	Ping Sun, H.E. Ruda, San Ming Yang, N. Matsuura
Rok vydání:	2005
Předmět:	Materials science High-refractive-index polymer Scanning electron microscope business.industry General Chemistry Dielectric Ferroelectricity chemistry.chemical_compound Optics chemistry Strontium titanate General Materials Science Polystyrene Composite material Thin film business Sol-gel
Zdroj:	Applied Physics A. 81:379-384
ISSN:	1432-0630 0947-8396
Popis:	Highly-ordered, ferroelectric, Pb-doped Ba0.7Sr0.3TiO3, inverse opal films were fabricated by spin-coating a sol–gel precursor into a polystyrene artificial opal template followed by heat treatment. Thin films of the ferroelectric were independently studied and were shown to exhibit good dielectric properties and high refractive indices. The excellent quality of the final inverse opal film using this spin-coating infiltration method was confirmed by scanning electron microscopy images and the good correspondence between optical reflection data and theoretical simulations. Using this method, the structural and material parameters of the final ferroelectric inverse opal film were easily adjusted by template heating and through repeated infiltrations, without changes in the initial template or precursor. Also, crack-free inverse opal thin films were fabricated over areas comparable to that of the initial crack-free polystyrene template (∼100 by 100 μm2).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aa5d610fb4762b951bb45ce34476918f https://doi.org/10.1007/s00339-004-2562-9 Zobrazit plný text záznamu Plný text ve formátu PDF