| La和Y掺杂对BaTiO3基PTC陶瓷性能的影响 |
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| 引用本文： | 丁士文,贾光. La和Y掺杂对BaTiO3基PTC陶瓷性能的影响[J]. 电子元件与材料, 2007, 26(1): 17-19 |
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| 作者姓名： | 丁士文 贾光 |
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| 作者单位： | 河北大学化学与环境科学学院,河北,保定,071002;河北大学化学与环境科学学院,河北,保定,071002 |
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| 摘 要： | 采用低温固相反应法(800℃)合成了一系列纳米掺杂BaTiO3基PTC瓷粉。经XRD分析,产品为立方晶系的完全互溶取代固溶体。分别研究了La和Y双施主掺杂以及烧结条件对材料PTC性能的影响,实验表明,以La和Y进行双施主掺杂可使材料的室温电阻进一步降低,升阻比提高。通过合理地调整双施主的相对含量,优化烧结制度,制备出了室温电阻为14.25?,升阻比达3.7×104的PTCR材料。
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| 关 键 词： | 电子技术 PTC陶瓷 BaTiO3 低温固相反应 双施主掺杂 烧结条件 |
| 文章编号： | 1001-2028（2007）01-0017-03 |
| 修稿时间： | 2006-11-01 |
Influence of La and Y codoping on the behaviors of BaTiO3-based PTC ceramics |
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| DING Shi-wen,JIA Guang. Influence of La and Y codoping on the behaviors of BaTiO3-based PTC ceramics[J]. Electronic Components & Materials, 2007, 26(1): 17-19 |
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| Authors: | DING Shi-wen JIA Guang |
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| Abstract: | A series of doped BaTiO3-based PTC ceramic powders were synthesized by solid-state reaction at low temperature.The result show that the compounds of cubic perovskite structure are mutually miscible in the solid solutions through by XRD patterns.The influence of the La and Y relative concentration and sintering conditions were studied respectively.It is found that R25 can reduce further and the ratio of Rmax/Rmin and temperature coefficient of resistance α can increase by doping double donor La and Y.As indicated by results,the R25 is 14.25 ? and ratio of Rmax/Rmin is 3.7×104 respectively by adjusting the relative concentration of La and Y under optimal sintering conditions. |
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| Keywords: | electron technology PTC ceramics BaTiO3 solid-state reaction at low temperature double-donor doping sintering conditions |
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