Preparation and Relaxor Behavior of Barium Strontium Titanate Glass-Ceramics Doped Si-B-O Sintered from Sol-Gel Derived Powders

Autor:	Jiang Ying Wang, Jing Ji Zhang
Rok vydání:	2011
Předmět:	Materials science Mechanical Engineering Doping Analytical chemistry Sintering Mineralogy Ionic bonding Dielectric Condensed Matter Physics Microstructure Mechanics of Materials visual_art visual_art.visual_art_medium Barium strontium titanate General Materials Science Ceramic Sol-gel
Zdroj:	Materials Science Forum. 687:370-374
ISSN:	1662-9752
DOI:	10.4028/www.scientific.net/msf.687.370
Popis:	The structural and dielectric properties of Si-B-O doped Ba0.60Sr0.40TiO3(BST) glass-ceramics prepared by using sol-gel derived powders have been investigated. The secondary phase of BaTi2Si2O8is clearly observable in BST glass-ceramics when the concentration of Si-B-O is equal to or more than 20mol%. The samples with high Si-B-O doping levels can be sintered into dense microstructure in low sintering temperature (below 1000°C). The dielectric peaks of BST glass-ceramics are markedly suppressed, broadened and shifted to low temperature with increasing the concentration of Si-B-O, accompanying an increased diffuseness of the dielectric peak due to the ionic substitution, which follows well the Lorenz-type relation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5c9fca56967b5373a45911536f892dac https://doi.org/10.4028/www.scientific.net/msf.687.370 Zobrazit plný text záznamu