Compensation of the temperature coefficient of the dielectric co

Details Compensation of the temperature coefficient of the dielectric co Compensation of the temperature coefficient of the dielectric co

1995-10-03

1996-09-03

Brunsman, David

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

C04B 3546

Patent

active

055523552

ABSTRACT:
A decrease in the temperature coefficient of the dielectric constant (TCK) for polycrystalline ceramics of Barium Strontium Titanate (BST) through admixture with tetragonal bronze type Barium Strontium Niobate (BSN) has been found. For Ba.sub.0.5 Sr.sub.0.5 TiO.sub.3 ceramics, a 10% admixture of BSN decreases TCK by a factor of 2.5 at 10 MHz, with negligible degradation of the dielectric loss. A 37.5% admixture of BSN decreases TCK by a factor of more than 100. Dielectric constants for the mixtures are in the range of 200-500.

REFERENCES:
patent: 5248640 (1993-09-01), Sano et al.

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