High thermoelectric performances of Bi–AE–Co–O compounds directionally growth from the melt
Bi2AE2Co2Ox (AE = Ca, Sr, and Ba) thermoelectric compounds were grown from the melt by the laser floating zone technique. Microstructural analysis of as-grown samples has shown the formation of well-aligned thermoelectric grains together with a relative high amount of secondary phases. On the other...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-01-01
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| Series: | Boletín de la Sociedad Española de Cerámica y Vidrio |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0366317517300936 |
| _version_ | 1818035287991779328 |
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| author | Juan-Carlos Diez Shahed Rasekh Maria A. Madre Miguel A. Torres Andres E. Sotelo |
| author_facet | Juan-Carlos Diez Shahed Rasekh Maria A. Madre Miguel A. Torres Andres E. Sotelo |
| author_sort | Juan-Carlos Diez |
| collection | DOAJ |
| description | Bi2AE2Co2Ox (AE = Ca, Sr, and Ba) thermoelectric compounds were grown from the melt by the laser floating zone technique. Microstructural analysis of as-grown samples has shown the formation of well-aligned thermoelectric grains together with a relative high amount of secondary phases. On the other hand, a short (24 h) thermal treatment (810 °C for Sr, 800 °C for Ca, and 750 °C for Ba) under air, raises of thermoelectric phase content through the recombination of the secondary ones. These microstructural modifications led to a large decrease of electrical resistivity, improving the power factor. These results have been compared with samples prepared by the conventional solid state method and with the best values reported in the literature. From these data, it is possible to deduce that the high thermoelectric characteristics obtained in these samples make them very attractive for practical applications. |
| first_indexed | 2024-12-10T06:52:40Z |
| format | Article |
| id | doaj.art-6174fd3ef5284305a7b494cbf5bb1add |
| institution | Directory Open Access Journal |
| issn | 0366-3175 |
| language | English |
| last_indexed | 2024-12-10T06:52:40Z |
| publishDate | 2018-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Boletín de la Sociedad Española de Cerámica y Vidrio |
| spelling | doaj.art-6174fd3ef5284305a7b494cbf5bb1add2022-12-22T01:58:30ZengElsevierBoletín de la Sociedad Española de Cerámica y Vidrio0366-31752018-01-015711810.1016/j.bsecv.2017.10.003High thermoelectric performances of Bi–AE–Co–O compounds directionally growth from the meltJuan-Carlos DiezShahed RasekhMaria A. MadreMiguel A. TorresAndres E. SoteloBi2AE2Co2Ox (AE = Ca, Sr, and Ba) thermoelectric compounds were grown from the melt by the laser floating zone technique. Microstructural analysis of as-grown samples has shown the formation of well-aligned thermoelectric grains together with a relative high amount of secondary phases. On the other hand, a short (24 h) thermal treatment (810 °C for Sr, 800 °C for Ca, and 750 °C for Ba) under air, raises of thermoelectric phase content through the recombination of the secondary ones. These microstructural modifications led to a large decrease of electrical resistivity, improving the power factor. These results have been compared with samples prepared by the conventional solid state method and with the best values reported in the literature. From these data, it is possible to deduce that the high thermoelectric characteristics obtained in these samples make them very attractive for practical applications.http://www.sciencedirect.com/science/article/pii/S0366317517300936ThermoelectricOxideDirectional growthElectrical properties |
| spellingShingle | Juan-Carlos Diez Shahed Rasekh Maria A. Madre Miguel A. Torres Andres E. Sotelo High thermoelectric performances of Bi–AE–Co–O compounds directionally growth from the melt Boletín de la Sociedad Española de Cerámica y Vidrio Thermoelectric Oxide Directional growth Electrical properties |
| title | High thermoelectric performances of Bi–AE–Co–O compounds directionally growth from the melt |
| title_full | High thermoelectric performances of Bi–AE–Co–O compounds directionally growth from the melt |
| title_fullStr | High thermoelectric performances of Bi–AE–Co–O compounds directionally growth from the melt |
| title_full_unstemmed | High thermoelectric performances of Bi–AE–Co–O compounds directionally growth from the melt |
| title_short | High thermoelectric performances of Bi–AE–Co–O compounds directionally growth from the melt |
| title_sort | high thermoelectric performances of bi ae co o compounds directionally growth from the melt |
| topic | Thermoelectric Oxide Directional growth Electrical properties |
| url | http://www.sciencedirect.com/science/article/pii/S0366317517300936 |
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