Studies on dielectric oxide materials containing niobium and tantalum

✍ Scribed by M. Thirumal; A.K. Ganguli

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 637 KB
• Volume: 44
• Category: Article
• ISSN: 0960-8974
• DOI: 10.1016/s0960-8974(02)00011-6

✦ Synopsis

There are now man;j~ ndvanceJ n iterials, which have been discovered with unique dielectric pn );x ' ie 5 ?I :wi *!g bet n {esigned with an eye to specific applications. One of the areas of current &crest to th material scientist and solid state chemist is to find new materials suitable for use as dielectric resonators in microwave applications and to tailor its properties. Among them the AI303 type perovskite oxides and the ABaO6 ( columbite / trirutile) type of oxides where B is either Nb or Ta have been pursued vigorously in the recent past. There is a continuous interest to optimise the dielectric properties by suitable doping at the A-site, B-site and the B' site of the perovskite related A( BrnB'anOs ) structure. In addition there is an increasing demand to discover alternate routes of synthesis, which would afford these oxides at much lower temperatures. We discuss our recent results on some of the above materials.