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Effect of Al3+,Si4+ on properties of donor,aceptor doped BaTiO3-based high Curie point PTCR material[J].China Ceramics,2002,38(4):7-9. Al3+;Si4+对施主、受主掺杂高居里点BaTiO3基PTCR材料性能的影响[J].;中国陶瓷;2002;38(4):7-9