Temperature-compensating ceramic dielectrics
AssigneeMurata Manufacturing Co., Ltd.
InventorsYukio Sakabe, Goro Nishioka
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Abstract
A temperature-compensating ceramic dielectric mainly comprises a composition consisting essentially of 35 to 65 wt % of neodymium titanates (Nd.sub.2 Ti.sub.2 O.sub.7), 10 to 35 wt % of barium titanates (BaTiO.sub.3), 10 to 35 wt % of titanium oxide (TiO.sub.2), 1 to 6 wt % of bismuth oxide (Bi.sub.2 O.sub.3) and 1 to 10 wt % of lead oxide (Pb.sub.3 O.sub.4), and contains 1 to 6 wt % of zinc oxide (ZnO) and 1 to 6 wt % of silicon oxide (SiO.sub.2). Up to 50 atom % of neodymium in neodymium titanates (Nd.sub.2 Ti.sub.2 O.sub.7) may be replaced with at least one element of the other rare earth elements except for Nd.
Claims2
A temperature-compensating ceramic dielectric consisting essentially of a composition consisting essentially of 35 to 65 wt% of neodymium titanate (Nd.sub.2 Ti.sub.2 O.sub.7), 10 to 35 wt% of barium titanate (BaTiO.sub.3), 10 to 35 wt% of titanium oxide (TiO.sub.2), 1 to 6 wt% of bismuth oxide (Bi.sub.2 O.sub.3) and 1 to 10 wt% of lead oxide (Pb.sub.3 O.sub.4), and including 1 to 6 wt% of zinc oxide (ZnO) and 1 to 6 wt% of silicon oxide (SiO.sub.2).
Dependencies are inferred from the claim text.