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US 6,319,871 B1Granted
Dielectric material
AssigneeNgk Spark Plug Co., Ltd.
InventorsMotohiko Sato, Hitoshi Yokoi, Kazushige Ohbayashi
Life of this patent
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Abstract
Disclosed is a dielectric material comprising: a main ingredient having a composition represented by xBaO-yRE2O3-zTiO2, wherein RE represents at least one rare earth element, and x+y+z=100 mol %; at least one alkali metal oxide; and an ingredient derived from an oxygen supplying agent which releases oxygen on heating.
Claims7
A dielectric material consisting of:
- a main ingredient having a composition represented by xBaO-yRE2O3-zTiO2, wherein RE represents at least one rare earth element, and x+y+z=100 mol %;
- wherein x, y and z in said main ingredient satisfy 0<x≦27.0, 0<y≦30.0, and 55.0≦z<100.0;
- at least one alkali metal oxide;
- and
- an ingredient derived from an oxygen supplying agent which releases oxygen on heating,
- wherein the oxygen supplying agent is selected from the group consisting of MnO2, CuO, AgO, SnO2, PbO2 and a combination thereof.
3 more elements
Dependencies are inferred from the claim text.