2006 25th International Conference on Thermoelectrics最新文献_第9页

Galvanomagnetic and Thermoelectric Properties of R3Cu3Sb4 Compounds R3Cu3Sb4化合物的流磁学和热电性质

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331231

C. Candolfi, B. Lenoir, A. Dauscher, V. Da Ros, B. Malaman, C. Bellouard, J. Hejtmánek

引用次数: 1

Contribution of Professor Anatoli G. Samoilovich to Development of Thermoelectricity: 100 Year Anniversary of his Birth 阿纳托利·g·萨莫伊洛维奇教授对热电发展的贡献:诞辰100周年纪念

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331252

G. Logvinov, L. Bulat, V. Chernysh, I. Korenblit, A. Snarskii

引用次数: 0

Thermoelectric properties of small diameter Bi nanowires: Evidence for surface charges 小直径铋纳米线的热电特性:表面电荷的证据

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331337

T. Huber, A. Nikolaeva, D. Gitsu, L. Konopko, M. Graf

{"title":"Thermoelectric properties of small diameter Bi nanowires: Evidence for surface charges","authors":"T. Huber, A. Nikolaeva, D. Gitsu, L. Konopko, M. Graf","doi":"10.1109/ICT.2006.331337","DOIUrl":"https://doi.org/10.1109/ICT.2006.331337","url":null,"abstract":"The thermoelectric properties of quasi-one-dimensional systems attract considerable attention. Semimetallic bismuth, aside from being a good thermoelectric material, has charge carriers with very low effective masses, and, as a result, electronic quantum confinement effects induce a semimetal-to-semiconductor transformation (SMSC) for wires with diameters below roughly 50 nm. Theoretical work based on one-dimensional models indicate that fine Bi wires may exhibit superior thermoelectric properties since the density of states at the Fermi level can be tuned to very high values in this case. However, angle-resolved photoemission spectroscopy (ARPES) studies of Bi surfaces have shown that Bi nanowires support surface states, with high carrier densities of around 5 times 1012 cm-2 and large effective mass, that have not been considered in current models of the SMSC. Our studies of Shubnikov-de Haas oscillations for 30-nm diameter Bi nanowires support this model. According to our estimates, the thermopower of this two dimensional sheet of charge should be observable and we carried out an experimental study of the thermopower of arrays of small diameter Bi nanowires to test these conflicting models of fine Bi nanowires","PeriodicalId":346555,"journal":{"name":"2006 25th International Conference on Thermoelectrics","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125932846","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 layered perovskite-type Nb-doped SrO(SrTiO3)n (n = 1,2) Ruddlesden-Popper phases 层状钙钛矿型铌掺杂SrO(SrTiO3)n (n = 1,2) Ruddlesden-Popper相的热电性能

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331285

Kyu Hyoung Lee, Hiromichi Ohta, K. Koumoto

引用次数: 3

Influence of pre-annealing and Mn + Al double doping on the microstructure and thermoelectric properties of iron disilicide 预退火和Mn + Al双掺杂对二硅化铁微观结构和热电性能的影响

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331230

H. Chen, X.B. Zhao, Z. M. He, C. Stiewe, E. Muller

{"title":"Influence of pre-annealing and Mn + Al double doping on the microstructure and thermoelectric properties of iron disilicide","authors":"H. Chen, X.B. Zhao, Z. M. He, C. Stiewe, E. Muller","doi":"10.1109/ICT.2006.331230","DOIUrl":"https://doi.org/10.1109/ICT.2006.331230","url":null,"abstract":"Iron disilicide based thermoelectric materials with the designed composition Fe1-xMnxAlySi2-y (x = 0.06, 0.08; y = 0, 0.02, 0.04) were prepared by rapid solidification and hot pressing (1193K, 100 MPa, 30 minutes). The effects of Mn+Al double doping were investigated. The influence of pre-annealing on the microstructure and the transport properties were also studied. X-ray diffraction and scanning electron microscopy show that after pre-annealing at 800degC for only 10 hours, the high temperature phases (alpha-Fe2Si5 and epsiv-FeSi) in the rapidly solidified powders Fe1-xMnx AlySi2-y have been completely transformed to (beta-FeSi2 phase for y = 0 and y = 0.02. It is found that the grain growth during hot pressing was suppressed for the pre-annealed samples. For the pressed compacts, the Seebeck coefficient was markedly enhanced by the pre-annealing treatment, while both the electrical conductivity and the thermal conductivity were decreased. Mn+Al double doping improves the electrical conductivity, but deteriorates the Seebeck coefficient and the thermal conductivity. The maximum of the figure of merit (ZT = 0.20) is obtained at 890 K for the sample double doped with y = 0.04 (Fe0.94Mn0.06Al0.02Si1.98) that is hot pressed from pre-annealed powders","PeriodicalId":346555,"journal":{"name":"2006 25th International Conference on Thermoelectrics","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130009340","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: 4

Vacuum Tunnel Diodes for Cooling Devices and Power Generators 用于冷却装置和发电机的真空隧道二极管

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331339

A. Holopkin, V. N. Abrutin

引用次数: 1

Fabrication of a- and c-axis oriented Zn0.98Al0.02O by a high magnetic field via gelcasting 强磁场凝胶铸造法制备a轴和c轴取向zn0.98 al0.020

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331354

H. Kaga, Y. Kinemuchi, S. Tanaka, A. Makiya, Z. Kato, K. Uematsu, K. Watari

引用次数: 3

Nano-block integration in the misfit layered Co oxides 错配层状Co氧化物中的纳米块集成

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331370

I. Terasaki, W. Kobayashi, S. Ishiwata

引用次数: 2

Synthesis and structural characterization of novel clathrate-II compounds of silicon 新型硅笼型化合物的合成与结构表征

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331267

S. Bobev, John Meyers, Veronika Fritsch, Yuki Yamasaki

{"title":"Synthesis and structural characterization of novel clathrate-II compounds of silicon","authors":"S. Bobev, John Meyers, Veronika Fritsch, Yuki Yamasaki","doi":"10.1109/ICT.2006.331267","DOIUrl":"https://doi.org/10.1109/ICT.2006.331267","url":null,"abstract":"The search for new and better thermoelectric (TE) materials has recently brought to light a somewhat forgotten class of compounds, the clathrates of group 14. The rich phenomenology of these and related cage-like structures has driven the most recent research on their electronic, magnetic, spectral, and conducting properties [Rowe, ed., 1995]. The present studies try to address the issue whether the clathrates are closed-shell compounds (i.e. semiconductor-like) by nature or whether the metallic behavior in some clathrates is simply a failure of the Zintl concept. The underlying principle in our work is based upon the formal oxidation states - a defect-free clathrate framework is electronically balanced since each group 14 element carries 4 valence electrons, which are shared with the 4 neighbors to form 4 covalent bonds. Each guest atom (alkali, alkaline-earth or rare-earth element) is considered merely as an electron donor that transfers its valence electron(s) to the network. Metallic behavior is expected even if the cages are not fully occupied, provided the framework retains the ideal tetrahedral topology. There are two possible ways to balance the extra electrons: 1) to create a vacancy in the framework, or 2) to substitute network atoms with electron-poorer elements, from groups 13 or 12 for example. Such considerations, however, are not always supported by experiments, suggesting that such a clear-cut approach is perhaps overly simplistic","PeriodicalId":346555,"journal":{"name":"2006 25th International Conference on Thermoelectrics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130994631","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: 11

Thermoelectric properties of cobalt rhodium oxides: [Bi2Ba2O4]p(Co,Rh)O2 钴铑氧化物的热电性质:[Bi2Ba2O4]p(Co,Rh)O2

2006 25th International Conference on Thermoelectrics Pub Date : 2006-08-01 DOI: 10.1109/ICT.2006.331305

S. Okada, A. Sakai, T. Kanno, S. Yotsuhashi, H. Adachi

引用次数: 1