Patent ID: 7119040

Claim:
A composite comprising essentially of: lead indium niobate, [Pb(In 1/2 Nb 1/2 )O 3 ]; and lead magnesium niobate, [Pb(Mg 1/3 Nb 2/3 )O 3 ] at least one dopant metal ion to replace lead ion in an amount of 2 to 5 mole percent, said metal ion being selected from the group consisting of Ba, Sr, Ti, Yb, La, Na, and their combinations thereof and being expressed by the following general formula (x)[Pb(In 1/2 Nb 1/2 )O 3 ]:(1−x)[Pb(Mg 1/3 Nb 2/3 )O 3 ], where 0<x <1.