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Fe对CeyFexCo4-xSb12化合物结 构和热电传输性质的影响

唐新峰 陈立东 後藤 孝 平井 敏雄 袁润章

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Fe对CeyFexCo4-xSb12化合物结 构和热电传输性质的影响

唐新峰, 陈立东, 後藤 孝, 平井, 敏雄, 袁润章

EFFECT OF Fe CONTENT ON THE CRYSTAL STRUCTURE AND THE THERMOELECTRIC TRANSPORT P ROPERTIES OF CeyFexCo4-xSb12

TANG XIN-FENG, CHEN LI-DONG, GOTO TAKASHI, HIRAI TOSHIO, YUAN RUN-ZHANG,
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  • 用熔融法合成了单相填充式skutterudite化合物CeyFexCo4-x Sb12(x=0—3.0,y=0—0.74).对Ce的填充范围,置换Fe原子对化合物的结 构及热电传输特性的影响进行了研究,Ce的填充分数随Fe含量的增加而线性增加,当Fe含量 大约为3时,Ce的填充分数达到0.74.晶格常量a随Fe含量的增加而增加,Ce的填充使晶格常 量进一步增加.当Ce填充分数达到饱和状态时,Cey
    Single-phase filled skutterudite compounds,CeyFexCo4- xSb12(x=0—3.0,y=0—0.74),were synthesized by a melting metho d.Effect of Fe content on Ce filling fraction,the crystal structure and the ther moelectric transport properties of CeyFexCo4-xS b12 saturated by Ce were investigated.Ce filling fraction increased l inearly with increasing Fe content.The lattice constants a of CeyFexCo4-xSb12 increased with increasing Fe content a nd Ce filling fraction.All samples showed p-type conduction.Hall coefficient RH decreased with increasing Fe content.Hole concentration p and electri cal conductivity σ increased with increasing Fe content.Seebeck coefficient α decreased with increasing Fe content.While Fe/Co ratio was about 1.5/2.5,the lat tice thermal conductivity (κl) reached the minimum values.
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出版历程
  • 收稿日期:  2000-04-21
  • 修回日期:  2000-07-14
  • 刊出日期:  2000-06-05

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