R. Littleton, T. Tritt, J. Kolis, M. C. Bryan, D. Ketchum, J. J. McGee
{"title":"锑掺杂对过渡金属五碲化物(Hf/sub - 1-X/Zr/sub - x/Te/sub - 5-Y/Sb/sub -Y/)热电性能的影响","authors":"R. Littleton, T. Tritt, J. Kolis, M. C. Bryan, D. Ketchum, J. J. McGee","doi":"10.1109/ICT.1999.843464","DOIUrl":null,"url":null,"abstract":"The electrical resistivity, /spl rho/, and the thermopower, /spl alpha/, of the transition-metal pentatelluride system Hf/sub 1-x/Zr/sub x/Te/sub 5-Y/Sb/sub Y/ have been measured over a broad range of temperature, 10 K<T<320 K. The systematic Sb-doping of this system of materials has been performed over a range from 0<Y<0.5, where Y is the Sb concentration. Both parent materials (HfTe/sub 5/ and ZrTe/sub 5/) exhibit a resistive transition peak, T/sub p//spl ap/80 K for HfTe/sub 5/ and T/sub p//spl ap/145 K for ZrTe/sub 5/. Each displays a large positive (p-type) thermopower (/spl alpha//spl ges/+125 /spl mu/V/K) around room temperature, which undergoes a change to a large negative (n-type) thermopower (/spl alpha//spl les/-125 /spl mu/V/K) below the peak temperature. The zero crossing of thermopower, T/sub O/, correlates very well with the peak in the resistivity, T/sub P/. The magnitude of this resistive anomaly is typically 3-7 times the room temperature value of /spl rho//spl ap/1 m/spl Omega//spl middot/cm. At a specific level of Sb doping the resistive anomaly is \"washed out\" and only a semimetallic temperature dependence is displayed. However, X-ray diffraction experiments show that the pentatelluride structure is still evident. Lower levels of Sb-doping shift both T/sub O/ and T/sub P/ with temperature exhibiting only slight changes in the maximum magnitude of the thermopower. These materials are currently being investigated for potential low temperature thermoelectric applications.","PeriodicalId":253439,"journal":{"name":"Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1999-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of antimony doping on the thermoelectric properties of the transition metal pentatellurides (Hf/sub 1-X/Zr/sub x/Te/sub 5-Y/Sb/sub Y/)\",\"authors\":\"R. Littleton, T. Tritt, J. Kolis, M. C. Bryan, D. Ketchum, J. J. McGee\",\"doi\":\"10.1109/ICT.1999.843464\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The electrical resistivity, /spl rho/, and the thermopower, /spl alpha/, of the transition-metal pentatelluride system Hf/sub 1-x/Zr/sub x/Te/sub 5-Y/Sb/sub Y/ have been measured over a broad range of temperature, 10 K<T<320 K. The systematic Sb-doping of this system of materials has been performed over a range from 0<Y<0.5, where Y is the Sb concentration. Both parent materials (HfTe/sub 5/ and ZrTe/sub 5/) exhibit a resistive transition peak, T/sub p//spl ap/80 K for HfTe/sub 5/ and T/sub p//spl ap/145 K for ZrTe/sub 5/. Each displays a large positive (p-type) thermopower (/spl alpha//spl ges/+125 /spl mu/V/K) around room temperature, which undergoes a change to a large negative (n-type) thermopower (/spl alpha//spl les/-125 /spl mu/V/K) below the peak temperature. The zero crossing of thermopower, T/sub O/, correlates very well with the peak in the resistivity, T/sub P/. The magnitude of this resistive anomaly is typically 3-7 times the room temperature value of /spl rho//spl ap/1 m/spl Omega//spl middot/cm. At a specific level of Sb doping the resistive anomaly is \\\"washed out\\\" and only a semimetallic temperature dependence is displayed. However, X-ray diffraction experiments show that the pentatelluride structure is still evident. Lower levels of Sb-doping shift both T/sub O/ and T/sub P/ with temperature exhibiting only slight changes in the maximum magnitude of the thermopower. These materials are currently being investigated for potential low temperature thermoelectric applications.\",\"PeriodicalId\":253439,\"journal\":{\"name\":\"Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)\",\"volume\":\"104 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-08-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICT.1999.843464\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICT.1999.843464","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Effect of antimony doping on the thermoelectric properties of the transition metal pentatellurides (Hf/sub 1-X/Zr/sub x/Te/sub 5-Y/Sb/sub Y/)
The electrical resistivity, /spl rho/, and the thermopower, /spl alpha/, of the transition-metal pentatelluride system Hf/sub 1-x/Zr/sub x/Te/sub 5-Y/Sb/sub Y/ have been measured over a broad range of temperature, 10 K
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