CaCu3Ti4O12: Low-Temperature Synthesis by Pyrolysis of an Organic Solution

Autor:	Chun-Gang Duan, Wai-Ning Mei, Robert W. Smith, John R. Hardy, Jianjun Liu, Yucheng Sui
Rok vydání:	2006
Předmět:	Chemistry General Chemical Engineering Inorganic chemistry chemistry.chemical_element General Chemistry Dielectric Copper Calcium nitrate Dielectric spectroscopy chemistry.chemical_compound Materials Chemistry Dissolution Pyrolysis Stoichiometry Titanium
Zdroj:	Chemistry of Materials. 18:3878-3882
ISSN:	1520-5002 0897-4756
DOI:	10.1021/cm060836m
Popis:	The giant-dielectric-constant material CaCu3Ti4O12 (CCTO) has been synthesized by pyrolyzing an organic solution containing stoichiometric amounts of the metal cations, which is done at lower temperature and shorter reaction time than the conventional solid-state reaction. A stable solution was prepared by dissolving calcium nitrate, copper(II) nitrate, and titanium(IV) isopropoxide in 2-methoxyethanol. This solution was pyrolyzed and heat-treated to achieve single-phase CCTO. The phases, microstructures, and dielectric properties of intermediate and final samples were characterized by X-ray diffraction, scanning electron microscopy, and dielectric spectroscopy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8ce49c96dab2f24b70a29619d85d4a14 https://doi.org/10.1021/cm060836m Zobrazit plný text záznamu