【摘要】 介绍了Y掺杂对BaTiO3 系半导化薄膜PTCR特性的影响。实验发现 ,当Y掺杂浓度在 0 .1mol%～ 1.5mol%时 ,薄膜的室温电阻为 10～ 5 0Ω ,突变温区为 1℃。在 [Y3 + ] =0 .7mol%时 ,薄膜的升阻比达 10 6。实验结果表明 :薄膜的转变温度、升阻比和室温电阻与Y掺杂浓度有关。更多还原

【Abstract】 The paper reported that the effect of yttrium content on the PTCR characteristics of BaTiO 3 semiconductive thin films.When the yttrium content is (0.1～1.5)mol%,the room temperature resistance is only about 10～50Ω,and the temperature range of resistance sharp change is only 1℃. The resistance ratio reach 10 6 at 0.7mol% for yttrium content. The experimental results shows that the room temperature resistance, the Curie temperature and the resistance ratio is depend on the yttrium content.更多还原