Ceramic ferroelectric composite material - BSTO-ZrO.sub.2

Details Ceramic ferroelectric composite material - BSTO-ZrO.sub.2 Ceramic ferroelectric composite material - BSTO-ZrO.sub.2

1994-03-07

1996-01-23

Jones, Deborah

Compositions: ceramic

Ceramic compositions

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

501104, 501138, C04B 3549

Patent

active

054864917

ABSTRACT:
A novel ceramic ferroelectric material having a low dielectric constant, loss and high tunability. The material is a composite comprising Barium Strontium Titanate (BSTO) and a ceramic material having a low dielectric constant. The preferred composite is represented by Ba.sub.1-x Sr.sub.x TiO.sub.3 --ZrO.sub.2, wherein x is greater than 0.00, but less than or equal to 0.70, and wherein the percent weight ratio between Ba.sub.1-x Sr.sub.x TiO.sub.3 and ZrO.sub.2 ranges from approximately 99%-40% and 1%-60%, respectively. The novel materials possess superior electronic properties; and they may be employed in various antenna systems.

REFERENCES:
patent: 4987108 (1991-01-01), Takagi et al.
patent: 5232880 (1993-08-01), Wada et al.
patent: 5290740 (1994-03-01), Abe et al.
patent: 5319517 (1994-06-01), Nomura et al.

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