BaTiO_3基半导体陶瓷已经广泛用来制造半导体陶瓷电容器、正温度系数(PTC)热敏电阻器、BaTiO_3压敏电阻器以及陶瓷二次电子倍强管等。BaTiO_3陶瓷半导化的机理,特别是掺杂对BaTiO_3陶瓷半导化的影响机理一直是一个非常引人注目的基础课题。BaTiO_3陶瓷半导化的途径有两个:强制还原半导化和掺杂半导化。 BaTiO_3-based semiconductor ceramics have been widely used in the manufacture of semiconductor ceramic capacitors, positive temperature coefficient (PTC) thermistors, BaTiO_3 varistors, and ceramic secondary electron multipliers. The mechanism of BaTiO_3 ceramic semiconducting, especially the effect of doping on the semiconducting behavior of BaTiO_3 ceramics, has always been a very important basic subject. BaTiO_3 ceramic semiconductor has two ways: forced reduction semiconducting and doped semiconductors.