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利用CS-m-D六面顶压机,对钴掺杂氧化锌Zn1-xCoxO(x=0,0.02,0.05,0.1)纳米粉末样品,在温度为600℃和压力为常压、4 GPa、6 GPa的条件下进行高温高压处理。通过对样品的X射线衍射分析和伏安特性测量,结果表明,高温高压能够有效促进材料晶粒成长,并有效提高样品的压敏特性。同时,实验显示,不同组分的Zn1-xCoxO样品中,x=0.05的样品具有较好的压敏特性。另外,通过分析指出,高温高压下掺杂样品产生的晶界偏析也是提高样品非线性的原因之一。
Cobalt-doped zinc oxide Zn1-xCoxO (x = 0,0.02,0.05,0.1) nanopowder samples were sintered at 600 ℃ with atmospheric pressure, 4 GPa, 6 GPa Under the conditions of high temperature and pressure treatment. The results of X-ray diffraction and voltammetry analysis show that high temperature and high pressure can effectively promote grain growth and improve the pressure-sensitive properties of samples. In the meantime, experiments show that the samples with x = 0.05 have better pressure-sensitive properties among Zn1-xCoxO samples with different components. In addition, it is pointed out through the analysis that the grain boundary segregation generated by the doped samples under high temperature and high pressure is also one of the reasons for increasing the non-linearity of the sample.