Thermoelectric properties of Fe2TiAl Heusler alloys
The Fe2VAl Heusler alloy was reported to have good thermoelectric properties. Because the natural resource of vanadium is insufficient, Fe2TiAl based alloys were studied. Ni, Co, or Cr was substituted to stabilize the Heusler structure and to control the valence electrons. The Seebeck coefficients d...
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| Veröffentlicht in: | Journal of alloys and compounds 2004-09, Vol.377 (1-2), p.38-42 |
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| container_title | Journal of alloys and compounds |
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| creator | SUZUKI, Ryosuke O KYONO, Takashi |
| description | The Fe2VAl Heusler alloy was reported to have good thermoelectric properties. Because the natural resource of vanadium is insufficient, Fe2TiAl based alloys were studied. Ni, Co, or Cr was substituted to stabilize the Heusler structure and to control the valence electrons. The Seebeck coefficients decreased in the Heusler single-phase region when these fourth elements were added, probably because the Fermi level was lying above the minimum in the density of state. The maximum and minimum Seebeck coefficients were +50 muV/K in Fe2(Ti0.6Cr0.4)Al and -34 micro-V/K in (Fe0.2Co0.8)2TiA1, respectively. Their electric conductivities were metallic judged by their temperature dependency. The characteristic semiconducting behavior of the Fe2VA1 Heusler alloy due to a pseudo gap in the density of state was not observed in the substituted Fe2TiAl alloys. |
| doi_str_mv | 10.1016/j.jallcom.2004.01.035 |
| format | Article |
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Because the natural resource of vanadium is insufficient, Fe2TiAl based alloys were studied. Ni, Co, or Cr was substituted to stabilize the Heusler structure and to control the valence electrons. The Seebeck coefficients decreased in the Heusler single-phase region when these fourth elements were added, probably because the Fermi level was lying above the minimum in the density of state. The maximum and minimum Seebeck coefficients were +50 muV/K in Fe2(Ti0.6Cr0.4)Al and -34 micro-V/K in (Fe0.2Co0.8)2TiA1, respectively. Their electric conductivities were metallic judged by their temperature dependency. The characteristic semiconducting behavior of the Fe2VA1 Heusler alloy due to a pseudo gap in the density of state was not observed in the substituted Fe2TiAl alloys.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2004.01.035</identifier><language>eng</language><publisher>Lausanne: Elsevier</publisher><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Electronic conduction in metals and alloys ; Electronic transport in condensed matter ; Exact sciences and technology ; Physics ; Thermoelectric and thermomagnetic effects</subject><ispartof>Journal of alloys and compounds, 2004-09, Vol.377 (1-2), p.38-42</ispartof><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c378t-2d252fab70e4756d0be20b6dc2a795682412f7026a0869dc256c5f5d9dfe5ae13</citedby><cites>FETCH-LOGICAL-c378t-2d252fab70e4756d0be20b6dc2a795682412f7026a0869dc256c5f5d9dfe5ae13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16076397$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>SUZUKI, Ryosuke O</creatorcontrib><creatorcontrib>KYONO, Takashi</creatorcontrib><title>Thermoelectric properties of Fe2TiAl Heusler alloys</title><title>Journal of alloys and compounds</title><description>The Fe2VAl Heusler alloy was reported to have good thermoelectric properties. 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| source | Elsevier ScienceDirect Journals |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Electronic conduction in metals and alloys Electronic transport in condensed matter Exact sciences and technology Physics Thermoelectric and thermomagnetic effects |
| title | Thermoelectric properties of Fe2TiAl Heusler alloys |
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