Patent ID: 8586495

Claim:
A material comprising: α[Ca 1-x-y Ba x Sr y (Ca 1-z Cu z )Cu 2-p La 2p/3 Ti 4-q M q O 12-δ ]+(1−α)[Ba r Sr 1-r TiO 3 ], wherein M is aluminum, chromium, zirconium, or combinations thereof, and 0≦x≦0.1, 0≦y≦1, 0≦z≦1, 0≦p≦0.1, 0≦q≦0.1, 0≦δ≦0.05, 0≦r≦1, and 0.5≦α≦1, with a proviso that when z=α=1, and p=q=0, x>0 and y>0; when x=y=0 and z=α=1, p and q are greater than zero; and when x=y=z=0, p and q are not simultaneously zero.