Use of composite materials which contain metal particles in an isolating oxide matrix as dielectrics

Abstract

Abstract Composite materials which are obtainable by (a) subjecting, in a liquid reaction medium, (1) one or more metal compounds and (2) one or more bifunctional compounds containing at least one group which is capable of complexing the metal and at least one group which forms an inorganic network on polycondensation, and optionally (3) one or more network formers which are capable of polycondensation, where the compounds (1), (2) and (3) are soluble in the reaction medium, to the conditions of a complexing reaction and hydrolytic polycondensation by the sol-gel process, and b) oxidising the resultant polycondensate to form a composite material which contains small metal and/or metal oxide particles having a very narrow particle size distribution in an oxide matrix, and optionally c) reducing the metal oxide particles which are present to give the metal, are used as dielectrics in electrical apparatuses and components. In addition, a conditioning or sintering treatment may be carried out in order to adjust the particle size of the metal particles in a specific manner.

Inventors

• 👤 Ulrich Prof. Dr. Schubert
• 👤 Boris Dr. Breitscheidel
• 👤 Achim Dr. Enders
• 👤 Peter Dr. Marquardt
• 👤 Günter Prof. Dr. Nimtz

Bibliographic Details