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Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)最新文献

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Tunneling spectroscopy of electronic structures of Bi/sub 2-x/Sn/sub x/Te/sub 3/ Bi/sub - 2-x/Sn/sub -x/ Te/sub - 3/电子结构的隧穿光谱
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740337
T. Nakura, H. Bando, H. Sasagawa, V. Kulbachinskii, H. Ozaki
{"title":"Tunneling spectroscopy of electronic structures of Bi/sub 2-x/Sn/sub x/Te/sub 3/","authors":"T. Nakura, H. Bando, H. Sasagawa, V. Kulbachinskii, H. Ozaki","doi":"10.1109/ICT.1998.740337","DOIUrl":"https://doi.org/10.1109/ICT.1998.740337","url":null,"abstract":"Tunneling spectroscopy has been carried out in order to investigate the electronic structure of Bi/sub 2-x/Sn/sub x/Te/sub 3/. The results are compared with the model of the electronic structure previously proposed by Kulbachinskii et al. The experimental results did not reproduce the model. The tunneling measurements showed that Sn associated electronic states distribute in the lower valence band over a wide energy range.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116910029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transport coefficients of Ge in magnetic fields 锗在磁场中的输运系数
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740372
K. Ikeda, H. Nakamura, I. Yanenaga, S. Yamaguchi
{"title":"Transport coefficients of Ge in magnetic fields","authors":"K. Ikeda, H. Nakamura, I. Yanenaga, S. Yamaguchi","doi":"10.1109/ICT.1998.740372","DOIUrl":"https://doi.org/10.1109/ICT.1998.740372","url":null,"abstract":"We measured the transport coefficients of InSb, Si and Ge in the magnetic field range of 0 to 4 Tesla near a room temperature. Transport coefficients obtained by measurements were electrical conductivity /spl sigma/, Hall coefficient R/sub h/, thermoelectric power /spl alpha/ and Nernst coefficient N. These experimental results have been verifying by the theoretical calculations based on the band model. We report the experimental results compared with theoretical values in the case of Ge. Theoretical values had qualitative agreements with experimental results.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121254160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Design study of the injection and extraction systems for the RIKEN superconducting ring cyclotron 日本理化研究所超导环形回旋加速器注入与萃取系统的设计研究
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740315
H. Okuno, T. Tominaka, S. Fujishima, T. Mitsumoto, T. Kubo, T. Kawaguchi, J. Kim, K. Ikegami, N. Sakamoto, S. Yokouchi, T. Morikawa, T. Tanaka, A. Goto, Y. Yano
{"title":"Design study of the injection and extraction systems for the RIKEN superconducting ring cyclotron","authors":"H. Okuno, T. Tominaka, S. Fujishima, T. Mitsumoto, T. Kubo, T. Kawaguchi, J. Kim, K. Ikegami, N. Sakamoto, S. Yokouchi, T. Morikawa, T. Tanaka, A. Goto, Y. Yano","doi":"10.1109/ICT.1998.740315","DOIUrl":"https://doi.org/10.1109/ICT.1998.740315","url":null,"abstract":"In the RI beam factory project, an intermediate-stage ring cyclotron and a six-sector superconducting ring cyclotron (IRC and SRC) are designed to boost the energy of the ion beams available from the existing RIKEN ring cyclotron (RRC). The output energies designed to the SRC are 400 MeV/u for light ions such as carbon and are 150 MeV/u for heavy ions such as uranium. In the present report, we describe the recent status of design study of the injection and extraction systems for the SRC.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122758906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Blocked generators for energy and industrial heat waste use 阻塞发电机用于能源和工业废热利用
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740423
L. Anatychuk, K. Misawa, N. Suzuki
{"title":"Blocked generators for energy and industrial heat waste use","authors":"L. Anatychuk, K. Misawa, N. Suzuki","doi":"10.1109/ICT.1998.740423","DOIUrl":"https://doi.org/10.1109/ICT.1998.740423","url":null,"abstract":"The results of 200 kW thermoelectric generator developments of liquid-liquid type have been given. Operating temperatures are the following: hot side temperature is 250/spl deg/C, cold side temperature is 50/spl deg/C. Heat transfer from a source is effected by high temperature liquid circulation. Heat removal from the generator is effected by water circulation. The generator is arranged from 400 blocks of 500 W each. A block volume is about 15 liters, its weight is about 15 kg. Specially designed highly effective heat exchangers together with Altek 1018 thermoelectric modules specially designed for that purpose have been used in the blocks. The generator's efficiency is about 6%. The generator's reliability is about 600 times greater than the reliability of known analogues. Depending on heat source, power generators of required power can be developed on the basis of such blocks. The generators are designed for utilization of waste heat from internal combustion engines, gas turbines, garbage combustion and from other industrial heat waste.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129020102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Thermoelectric and galvano-thermomagnetic properties of Ag/sub 2/Te Ag/sub /Te的热电和热电热磁性能
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740382
I. Yoshida, T. Ono, M. Sakurai, S. Tanuma
{"title":"Thermoelectric and galvano-thermomagnetic properties of Ag/sub 2/Te","authors":"I. Yoshida, T. Ono, M. Sakurai, S. Tanuma","doi":"10.1109/ICT.1998.740382","DOIUrl":"https://doi.org/10.1109/ICT.1998.740382","url":null,"abstract":"The Hall coefficient, resistivity and Seebeck coefficient of Ag/sub 2/Te have been measured over the temperature range from 100 to 300 K. These results indicate that the compound is highly degenerate. The effect of the magnetic field has also been studied up to 1.2 T. The size of the transversal magnetoresistance with a magnetic field of 1.2 T is about 15% at lower temperatures, but it decreases to about 5% at higher temperatures. The effect of the magnetic field on the Seebeck coefficient is on the other hand more intense at higher than at lower temperatures. The experimental results have been analyzed by numerically solving the Boltzmann transport equation.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123646315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Perspectives of new materials research for thermoelectric applications 热电应用新材料研究展望
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740307
K. Matsubara
{"title":"Perspectives of new materials research for thermoelectric applications","authors":"K. Matsubara","doi":"10.1109/ICT.1998.740307","DOIUrl":"https://doi.org/10.1109/ICT.1998.740307","url":null,"abstract":"A possibility of increasing the thermoelectric figure-of-merit of materials has bent definitely identified by the use of different fabrication techniques. An attempt at rf-plasma processing has been made to improve the figure-of-merit of iron disilicides /spl beta/-FeSi/sub 2/. In addition, our recent results on the skutterudites CoSb/sub 3/ and related-materials are reported. The lattice thermal conductivity /spl kappa//sub L/ of CoSb/sub 3/ is a factor of 7 to 10 higher than that of a state-of-art thermoelectric material such as Bi/sub 2/Te/sub 3//Sb/sub 2/Te/sub 3/. This can be lowered to some degree by mixed-valence alloying. The /spl kappa//sub L/ of n-type Co/sub 0.9/(PdPt)/sub 0.1/Sb/sub 3/ was 0.025 W/cmK, which was one-fifths smaller than that of CoSb/sub 3/, which led to a ZT value of 0.9 at 800 K. However, the reduction in the lattice thermal conductivity by the mixed-valence alloying is limited. The lattice thermal conductivity is strongly affected by the Debye temperature /spl Theta//sub D/ of materials; therefore, the first matter to be settled may be to lower the value of /spl Theta//sub D/ for improving the figure-of-merit.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121726559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prospects for Peltier cooling of the cuprate superconductors 铜超导体珀尔帖冷却的前景
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740425
J. Straehle, S. Rath, T. Hans, T. Metzger, T. Nissel, R. Huebener, S. Kemmler‐sack
{"title":"Prospects for Peltier cooling of the cuprate superconductors","authors":"J. Straehle, S. Rath, T. Hans, T. Metzger, T. Nissel, R. Huebener, S. Kemmler‐sack","doi":"10.1109/ICT.1998.740425","DOIUrl":"https://doi.org/10.1109/ICT.1998.740425","url":null,"abstract":"The figure of merit z of commercial Peltier modules has been measured to drop from z=2.3/spl times/10/sup -3/ K/sup -1/ with the warm end near 295 K to z=4/spl times/10/sup -4/ K/sup -1/ with the warm end at 80 K. Therefore, for reaching the superconducting temperature range even for the cuprates with the highest critical temperature T/sub c//spl ap/130 K, new thermoelectric materials with their maximum value of z around 150 K or lower must be developed. We present experimental results on p- and n-doped compounds of the family Bi/sub 2-x/Sb/sub x/Te/sub 3-y/Se/sub y/ showing improved values of z at 150 K and below. We have studied in particular the influence of sintering.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"209 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130034342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermoelectric properties of metal-doped /spl beta/-rhombohedral boron 金属掺杂/spl β /-菱形体硼的热电性质
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740443
T. Nakayama, K. Tanaka, J. Shimizu, K. Kimura
{"title":"Thermoelectric properties of metal-doped /spl beta/-rhombohedral boron","authors":"T. Nakayama, K. Tanaka, J. Shimizu, K. Kimura","doi":"10.1109/ICT.1998.740443","DOIUrl":"https://doi.org/10.1109/ICT.1998.740443","url":null,"abstract":"For the development of n-type high-temperature thermoelectric materials in boron-rich solids, /spl beta/-rhombohedral boron was doped with V, Cr, Fe or Zr, and the relationship between the electrical properties below the room temperature and the site occupancies were investigated. The electrical conductivity increases with an increase in the occupancies of the A/sub 1/ sites by metal atoms. The Seebeck coefficients of metal-doped /spl beta/-boron decrease with increasing metal concentration except for Zr-doped /spl beta/-boron. Both the electrical conductivity and the Seebeck coefficient increase with temperature, reflecting the variable-range hopping conduction. The power factor increases with temperature, and the n-type /spl beta/-boron whose power factor is three orders of magnitude larger than that of pure /spl beta/-boron at the room temperature was obtained by V- or Cr-doping at higher metal concentration.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131891867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A novel approach to thermoelectrics materials research of skutterudites 滑石热电材料研究的新途径
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740389
H. Sellinschegg, D.C. Johnson, G. Nolas, G. Slack, S. Schujman, F. Mohammed, T. Tritt, E. Nelson
{"title":"A novel approach to thermoelectrics materials research of skutterudites","authors":"H. Sellinschegg, D.C. Johnson, G. Nolas, G. Slack, S. Schujman, F. Mohammed, T. Tritt, E. Nelson","doi":"10.1109/ICT.1998.740389","DOIUrl":"https://doi.org/10.1109/ICT.1998.740389","url":null,"abstract":"In recent years, attention has been refocused on thermoelectric materials research because of the interesting crystal structure and transport properties of the skutterudite family of compounds. The interest in this material system arises from its marked reduction in lattice thermal conductivity where the voids in the crystal structure are filled with \"guest\" atoms. The disorder resulting from these atomic inclusions acts as an excellent phonon-scattering mechanism, although this mechanism(s) is not as yet totally understood. In this paper we introduce a novel synthesis approach for the continuing investigation of this interesting crystal system.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133444884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Thermoelectric figure of merit of impurity doped and hot-pressed magnesium silicide elements 掺杂和热压硅化镁元素的热电性能图
Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365) Pub Date : 1998-05-24 DOI: 10.1109/ICT.1998.740395
T. Kajikawa, K. Shida, K. Shiraishi, T. Ito, M. Omori, T. Hirai
{"title":"Thermoelectric figure of merit of impurity doped and hot-pressed magnesium silicide elements","authors":"T. Kajikawa, K. Shida, K. Shiraishi, T. Ito, M. Omori, T. Hirai","doi":"10.1109/ICT.1998.740395","DOIUrl":"https://doi.org/10.1109/ICT.1998.740395","url":null,"abstract":"Intermetallic magnesium compounds and their solid solutions have been known as potentially promising thermoelectric materials for the middle temperature power generation application. Spark plasma sintering and subsequent hot-pressing were used to make the impurity doped Mg/sub 2/Si thermoelectric elements. The temperature dependence of thermoelectric properties such as the Seebeck coefficient, electrical conductivity and thermal conductivity was measured to clarify the optimum performance of sintered Mg/sub 2/Si elements. Moreover, the semiconducting properties such as Hall mobility and carrier concentration were measured by the van der Pauw method. In the case of 0.6 at%Sb doped n-type sintered elements the maximum power factor was obtained 3.0/spl times/10/sup -3/ W/mK/sup 2/ at 773 K and the figure of merit was 0.87/spl times/10/sup -3/ K/sup -1/ and dimensionless figure of merit ZT was 0.67. Concerning p-type Mg/sub 2/Si elements, silver doped, sintered Mg/sub 2/Si was made by the same procedure as n-type antimony doped sintered elements. The junction of a Mg/sub 2/Si element with the electrode was also studied to check the junction resistance between the thermoelectric element and the electrode. It was found that Fe was suitable as an electrode.","PeriodicalId":338603,"journal":{"name":"Seventeenth International Conference on Thermoelectrics. Proceedings ICT98 (Cat. No.98TH8365)","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132772434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
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