| 摘要 |
A semiconductor ceramic having a compounding molar ratio m between a Sr site and a Ti site that satisfies 1.000 ≦̸m≦̸1.020, has a donor element present as a solid solution in crystal grains, has an acceptor element present in a grain boundary layer in the range of 0.5 mol or less with respect to 100 mol of the Ti element, contains a Zr element in the range of 0.15 mol or more and 3.0 mol or less with respect to 100 mol of the Ti element, and has the crystal grains of 1.5 μm or less in average grain size. |
