新型热电滑石的物理性质:Eu/sub y/Fe/sub 4-x/Co/sub x/Sb/sub 12/和Eu/sub y/Fe/sub 4-x/Ni/sub x/Sb/sub 12/

Proceedings ICT2001. 20 International Conference on Thermoelectrics (Cat. No.01TH8589) Pub Date : 2001-06-08 DOI:10.1109/ICT.2001.979826

S. Berger, C. Paul, E. Bauer, A. Grytsiv, P. Rogl, D. Kaczorowski, A. Saccone, R. Ferro, C. Godart

{"title":"新型热电滑石的物理性质:Eu/sub y/Fe/sub 4-x/Co/sub x/Sb/sub 12/和Eu/sub y/Fe/sub 4-x/Ni/sub x/Sb/sub 12/","authors":"S. Berger, C. Paul, E. Bauer, A. Grytsiv, P. Rogl, D. Kaczorowski, A. Saccone, R. Ferro, C. Godart","doi":"10.1109/ICT.2001.979826","DOIUrl":null,"url":null,"abstract":"Alloys from the two solid solutions Eu/sub y/Fe/sub 4-x/Co/sub x/Sb/sub 12/ and Eu/sub y/Fe/sub 4-x/Ni/sub x/Sb/sub 12/ were synthesised by argon arc-melting and isotypism was established with the skutterudite-type structure LaFe/sub 4/P/sub 12/. The Eu-content of the samples was determined by Rietveld refinements and electron microprobe measurements EMPA confirming a gradual decrease of the maximum Eu-content from y=0.83 in Eu/sub y/Fe/sub 4/Sb/sub 12/ to y=0.44 in Eu/sub y/Co/sub 4/Sb/sub 12/ and to y=0.56 in Eu/sub y/Fe/sub 2/Ni/sub 2/Sb/sub 12/. Eo/sub 0.83/Fe/sub 4/Sb/sub 12/ orders magnetically around 84 K and the transition temperature decreases as a function of the Fe/Co and Fe/Ni substitution. X-ray absorption edge and magnetic susceptibility measurements served to define the electronic configuration of Eu and the magnetic state of the polyanions [Fe/sub 4-x/Co/sub x/Sb/sub 12/]. To evaluate the figure of merit, thermopower, thermal conductivity and electrical resistivity measurements were performed. Due to the Fe/Co-substitution the hole number is reduced and further compensated by the electropositive element. This influences the Seebeck coefficients significantly, which has a great impact on the figure of merit.","PeriodicalId":203601,"journal":{"name":"Proceedings ICT2001. 20 International Conference on Thermoelectrics (Cat. No.01TH8589)","volume":"2006 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Physical properties of novel thermoelectric skutterudites: Eu/sub y/Fe/sub 4-x/Co/sub x/Sb/sub 12/ and Eu/sub y/Fe/sub 4-x/Ni/sub x/Sb/sub 12/\",\"authors\":\"S. Berger, C. Paul, E. Bauer, A. Grytsiv, P. Rogl, D. Kaczorowski, A. Saccone, R. Ferro, C. Godart\",\"doi\":\"10.1109/ICT.2001.979826\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Alloys from the two solid solutions Eu/sub y/Fe/sub 4-x/Co/sub x/Sb/sub 12/ and Eu/sub y/Fe/sub 4-x/Ni/sub x/Sb/sub 12/ were synthesised by argon arc-melting and isotypism was established with the skutterudite-type structure LaFe/sub 4/P/sub 12/. The Eu-content of the samples was determined by Rietveld refinements and electron microprobe measurements EMPA confirming a gradual decrease of the maximum Eu-content from y=0.83 in Eu/sub y/Fe/sub 4/Sb/sub 12/ to y=0.44 in Eu/sub y/Co/sub 4/Sb/sub 12/ and to y=0.56 in Eu/sub y/Fe/sub 2/Ni/sub 2/Sb/sub 12/. Eo/sub 0.83/Fe/sub 4/Sb/sub 12/ orders magnetically around 84 K and the transition temperature decreases as a function of the Fe/Co and Fe/Ni substitution. X-ray absorption edge and magnetic susceptibility measurements served to define the electronic configuration of Eu and the magnetic state of the polyanions [Fe/sub 4-x/Co/sub x/Sb/sub 12/]. To evaluate the figure of merit, thermopower, thermal conductivity and electrical resistivity measurements were performed. Due to the Fe/Co-substitution the hole number is reduced and further compensated by the electropositive element. This influences the Seebeck coefficients significantly, which has a great impact on the figure of merit.\",\"PeriodicalId\":203601,\"journal\":{\"name\":\"Proceedings ICT2001. 20 International Conference on Thermoelectrics (Cat. No.01TH8589)\",\"volume\":\"2006 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-06-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings ICT2001. 20 International Conference on Thermoelectrics (Cat. No.01TH8589)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICT.2001.979826\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings ICT2001. 20 International Conference on Thermoelectrics (Cat. No.01TH8589)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICT.2001.979826","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 3

摘要

采用氩弧焊法制备了Eu/sub y/Fe/sub - 4-x/Co/sub x/Sb/sub - 12/和Eu/sub y/Fe/sub - 4-x/Ni/sub x/Sb/sub - 12/两种固溶体的合金，并建立了等型结构，为ffe /sub - 4/P/sub - 12/。用Rietveld精化法和电子探针EMPA法测定了样品中的Eu-含量，证实了样品中Eu/sub - y/Fe/sub - 4/Sb/sub - 12/中的最大Eu含量从y=0.83逐渐降低到u/sub - y/Co/sub - 4/Sb/sub - 12/中的y=0.44，再到Eu/sub - y/Fe/sub - 2/Ni/sub - 2/Sb/sub - 12/中的y=0.56。在84 K附近，Eo/sub 0.83/Fe/sub 4/Sb/sub 12/阶的磁性减弱，转变温度随着Fe/Co和Fe/Ni取代的减小而减小。x射线吸收边和磁化率测量用于确定Eu的电子构型和聚阴离子[Fe/sub - 4-x/Co/sub -x/ Sb/sub - 12/]的磁态。为了评估优值，进行了热功率、导热系数和电阻率的测量。由于Fe/ co取代，孔数减少，并进一步由正电元素补偿。这对塞贝克系数有很大的影响，对优值有很大的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Physical properties of novel thermoelectric skutterudites: Eu/sub y/Fe/sub 4-x/Co/sub x/Sb/sub 12/ and Eu/sub y/Fe/sub 4-x/Ni/sub x/Sb/sub 12/

Alloys from the two solid solutions Eu/sub y/Fe/sub 4-x/Co/sub x/Sb/sub 12/ and Eu/sub y/Fe/sub 4-x/Ni/sub x/Sb/sub 12/ were synthesised by argon arc-melting and isotypism was established with the skutterudite-type structure LaFe/sub 4/P/sub 12/. The Eu-content of the samples was determined by Rietveld refinements and electron microprobe measurements EMPA confirming a gradual decrease of the maximum Eu-content from y=0.83 in Eu/sub y/Fe/sub 4/Sb/sub 12/ to y=0.44 in Eu/sub y/Co/sub 4/Sb/sub 12/ and to y=0.56 in Eu/sub y/Fe/sub 2/Ni/sub 2/Sb/sub 12/. Eo/sub 0.83/Fe/sub 4/Sb/sub 12/ orders magnetically around 84 K and the transition temperature decreases as a function of the Fe/Co and Fe/Ni substitution. X-ray absorption edge and magnetic susceptibility measurements served to define the electronic configuration of Eu and the magnetic state of the polyanions [Fe/sub 4-x/Co/sub x/Sb/sub 12/]. To evaluate the figure of merit, thermopower, thermal conductivity and electrical resistivity measurements were performed. Due to the Fe/Co-substitution the hole number is reduced and further compensated by the electropositive element. This influences the Seebeck coefficients significantly, which has a great impact on the figure of merit.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Proceedings ICT2001. 20 International Conference on Thermoelectrics (Cat. No.01TH8589)

自引率

0.00%

发文量