Dielectric material for microwave of CaTIO.sub.3 -La(Mg.sub.1/2

Details Dielectric material for microwave of CaTIO.sub.3 -La(Mg.sub.1/2 Dielectric material for microwave of CaTIO.sub.3 -La(Mg.sub.1/2

1997-08-15

1998-11-24

Brunsman, David

Compositions: ceramic

Ceramic compositions

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

L04B 35465

Patent

active

058406425

ABSTRACT:
The present invention relates to a dielectric material for a microwave of a CaTiO.sub.3 -La(Mg.sub.1/2 Ti.sub.1/2)O.sub.3 -LaAlO.sub.3 group. The dielectric material for a microwave according to the present invention includes a composition condition of 0.3.ltoreq.x.ltoreq.0.6 and Ti.sub.1/2)O.sub.3 -yLaAlO.sub.3 !. The high frequency dielectric material includes an dielectric constant of above 40, a low dielectric loss, and a temperature coefficient of a resonant frequency which is easily variable from a positive (+) value to a negative (-) value with respect to the value of 0 ppm/.degree.C.

REFERENCES:
Nishigaki, ET AL., "BaO-TIO.sub.2 -WO.sub.3 Microwave Ceramics and month avail.
Wakino et al., Microwave Characteristics of (Zr, Sn)TIO.sub.4 and BaO-PbO-Nd.sub.2 O.sub.3 -TiO.sub.2 Dielectric Resonators J. Amer. Ceram.
Youn et al, "Microstructual Characteristics of Ba(Mg.sub.1/3 Ta.sub.2/3)O.sub.3 Ceramics and its Related Microwave Dielectric Properties", Jpn. J. Appl. Phys. vol. 35 (1996) no month avail. pp. 3947-3953.

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