Direct-write, chemically-prepared temperature insensitive dielectrics.
Development of high energy density dielectrics with low temperature coefficients of capacitance that are systems integrable are needed for extreme environment, defense and automotive applications. The synthesis of high purity chemically prepared Ca(Zr,Ti)O3 powders is described and has resulted in the lowering of conventional firing temperatures by over 100 C. Direct write aerosol spray deposition techniques have been used to fabricate high quality single layer and multilayer capacitors from these powders. The dielectric constants of the direct write capacitors are equivalent to those of fired bulk ceramics. Our presentation emphasizes the synthesis, phase evolution and microstructure development that has resulted in dielectrics with energy densities in excess of 3 J/cm3 with less than 1% change in dielectric constant over a 200 C temperature range.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1030300
- Report Number(s):
- SAND2010-7701C; TRN: US201124%%97
- Resource Relation:
- Conference: Proposed for presentation at the Third International Congress on Ceramics held November 14-18, 2010 in Osaka, Japan.
- Country of Publication:
- United States
- Language:
- English
Similar Records
INVESTIGATIONS OF TITANATE CERAMICS FOR VOLTAGE GENERATION UNDER HIGH IMPACT LOADING. Final Report, September 1958-December 1959
Chemically prepared lead magnesium niobate dielectrics