| Articolul precedent |
| Articolul urmator |
 |
 913 4 |
| Ultima descărcare din IBN: 2022-12-09 14:11 |
| Căutarea după subiecte similare conform CZU |
| 537.32+621.315.5+621.38 (1) |
| Current electricity. Electric current. Electrokinetics (90) |
| Electrical engineering (1153) |
 SM ISO690:2012NIKOLAEVA, Albina, KONOPKO, Leonid, BODYUL, P., POPOV, Ivan, MOLOSHNIK, Eugen. Bi-Sb layers and wires for magneto- thermoelectric applications. In: Materials Science and Condensed Matter Physics, Ed. 9, 25-28 septembrie 2018, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2018, Ediția 9, p. 309. |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
| Materials Science and Condensed Matter Physics Ediția 9, 2018 |
|||||||
|
Conferința "International Conference on Materials Science and Condensed Matter Physics" 9, Chișinău, Moldova, 25-28 septembrie 2018 | |||||||
|
|||||||
| CZU: 537.32+621.315.5+621.38 | |||||||
| Pag. 309-309 | |||||||
|
|||||||
 Descarcă PDF |
|||||||
| Rezumat | |||||||
Thermoelectric energy conversion efficiency is defined as ZT = S2 σ /χT, where S is the Seebeck coefficient, = is the electrical conductivity, χ is the thermal conductivity, and T is the absolute temperature. This study is aimed at increasing the thermoelectric figure of merit ZT to maximize the power factor and minimize the thermal conductivity. Since undoped Bi–12at%Sb alloys are of n-type, the possibility of obtaining p-type Bi–Sb alloys (bulk samples and layers) with a high figure of merit by the addition of acceptor impurities and the application of a transverse magnetic field has been explored. The mechanical exfoliation method was used to obtain Bi1-xSbx layers and the liquid-phase casting method (Ulitovsky–Tailor) was used to prepare wires [1]. In this paper, we present the results of measurements of transport effects in undoped and doped Bi–12at%Sb–0.001at%Pb alloy bulk samples, single-crystal layers, and glass-insulated wires. The measurements included the electrical resistivity, Seebeck coefficient S, and the Nernst coefficient as a function of crystallographic direction, temperature, and magnetic field direction. The values and temperature dependence of power factor α2 σ, which were calculated from experimental data in a transverse magnetic field, showed a considerable increase in this parameter in the wires and layers compared with the bulk samples in a magnetic field of 0.3 T [2, 3]. A combination of the Peltier and magneto-Peltier effects in Bi–Sb layers and wires provides a stronger cooling both from room temperature and from 100 K than the cooling in bulk alloys of the same composition. |
|||||||
|
Dublin Core Export
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Nikolaeva, A.A.</dc:creator> <dc:creator>Konopko, L.A.</dc:creator> <dc:creator>Bodiul, P.P.</dc:creator> <dc:creator>Popov, I.A.</dc:creator> <dc:creator>Moloşnic, E.T.</dc:creator> <dc:date>2018</dc:date> <dc:description xml:lang='en'><p>Thermoelectric energy conversion efficiency is defined as ZT = <em>S</em><sup>2</sup> σ /χ<em>T</em>, where <em>S </em>is the Seebeck coefficient, = is the electrical conductivity, χ is the thermal conductivity, and <em>T </em>is the absolute temperature. This study is aimed at increasing the thermoelectric figure of merit ZT to maximize the power factor and minimize the thermal conductivity. Since undoped Bi–12at%Sb alloys are of <em>n</em>-type, the possibility of obtaining <em>p</em>-type Bi–Sb alloys (bulk samples and layers) with a high figure of merit by the addition of acceptor impurities and the application of a transverse magnetic field has been explored. The mechanical exfoliation method was used to obtain Bi1-xSbx layers and the liquid-phase casting method (Ulitovsky–Tailor) was used to prepare wires [1]. In this paper, we present the results of measurements of transport effects in undoped and doped Bi–12at%Sb–0.001at%Pb alloy bulk samples, single-crystal layers, and glass-insulated wires. The measurements included the electrical resistivity, Seebeck coefficient <em>S</em>, and the Nernst coefficient as a function of crystallographic direction, temperature, and magnetic field direction. The values and temperature dependence of power factor α<sup>2</sup> σ, which were calculated from experimental data in a transverse magnetic field, showed a considerable increase in this parameter in the wires and layers compared with the bulk samples in a magnetic field of 0.3 T [2, 3]. A combination of the Peltier and magneto-Peltier effects in Bi–Sb layers and wires provides a stronger cooling both from room temperature and from 100 K than the cooling in bulk alloys of the same composition. </p></dc:description> <dc:source>Materials Science and Condensed Matter Physics (Ediția 9) 309-309</dc:source> <dc:title>Bi-Sb layers and wires for magneto- thermoelectric applications</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>
|
|
|
