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为了制备ZrO2掺杂的BaCo0.7Fe0.2Nb0.1O3-δ(BCFN)样品并研究其高温化学稳定性和电学性能,分别通过XRD研究了材料相成分的变化;通过收缩率和密度的测量并结合SEM研究了材料的微观结构;通过TG实验研究了材料在一定气氛下随温度的失重变化;通过直流四电极法测量了材料总电导的变化规律.研究结果表明,BCFN掺杂ZrO2之后材料为双相复合结构.随着ZrO2掺杂量的增加,材料在惰性气氛和氢气气氛下表现出更好的结构稳定性.ZrO2掺杂与未掺杂的BCFN体系其电学性能随温度的变化规律相同,在570℃之前的低温范围以P型半导体电子空穴导电机制为主,在高温则是同时存在电子空穴导电与氧离子导电,随着ZrO2掺杂量的增加,材料在空气气氛下的总电导率依次下降.

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