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0212型Ca3Cu2O4+δCl2-y化合物高温高压合成与研究

DOI: 10.11858/gywlxb.2007.01.003, PP. 15-19

Keywords: 高温高压合成,顶角氧掺杂,Ca3Cu2O4Cl2

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Abstract:

利用“顶角氧掺杂”机制,即以二价氧部分替代顶角一价氯,用Ag2O做氧源,在高温高压下制备了单相的Ca3Cu2O4+δCl2-y样品。X射线衍射分析发现,随着Ag2O含量的增加,Ca3Cu2O4+δCl2-y样品的晶格常数a逐渐变小,c逐渐增大,体现了空穴掺杂的本质。进行了电阻率和磁化率测量,没有发现超导性,可能是空穴载流子没有达到合适的浓度所致。

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