Sol–Gel Processing and Microwave Characteristics of Ba(Mg<sub>⅓</sub>Ta<sub>⅔</sub>)O<sub>3</sub> Dielectrics

DOI Web Site Web Site 3 Citations

Abstract

<jats:p>The sol–gel method has been developed for the preparation of pure Ba(Mg<jats:sub>1/3</jats:sub>Ta<jats:sub>2/3</jats:sub>)O<jats:sub>3</jats:sub> ceramics. This involves the reaction of the heterometallic alkoxide Ta<jats:sub>2</jats:sub>Mg(OEt)<jats:sub>12</jats:sub> with hydrated barium hydroxide Ba(OH)<jats:sub>2</jats:sub>·8H<jats:sub>2</jats:sub>O. Complete crystallization of the sol–gel‐derived powder is achieved at 600°C, leading to a cubic perovskite type phase. After sintering at 1400°C (2–5 h), a trigonal cell arises from Mg–Ta ordering (the degree of order is greater than 0.9), and about 98.5% of the theoretical density is obtained. Preliminary microwave dielectric measurements show that the dielectric constant and the unloaded <jats:italic>Q</jats:italic><jats:sub>u</jats:sub> of the ceramics are 24.2 and 6750, respectively, at 7.7 GHz.</jats:p>

Journal

Citations (3)*help

See more

Keywords

Report a problem

Back to top