{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T00:45:17Z","timestamp":1781052317331,"version":"3.54.1"},"reference-count":14,"publisher":"AIP Publishing","issue":"17","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2000,4,24]]},"abstract":"<jats:p>Bi 2 Sr 2 Co 2 O 9 (BC-2202) polycrystalline materials with a layered structure have been prepared by partial melting. The chemical compositions of the samples are Bi2Sr2Co2Ox (2202), Bi1.8Sr2Co2Ox (Bi-1.8), and Bi2Sr1.8Co2Ox (Sr-1.8). All three samples are p-type conductors. The electric properties, namely, the Seebeck coefficient (S) and electric resistivity (\u03c1), of the samples are dependent on chemical composition. The S values increase with temperature at T&amp;gt;673\u200aK and, at 973 K, reach 100, 110, and 150 \u03bcV\u200aK\u22121 for the 2202, the Bi-1.8, and the Sr-1.8 samples, respectively. Thermal conductivity (\u03ba) for all samples is lower than for ordinary conducting oxides. The figure of merit (Z) increases with temperature for all samples. Z values at 973 K are 0.77\u00d710\u22124,\u20080.61\u00d710\u22124, and 2.0\u00d710\u22124\u200aK\u22121 for the 2202, Bi-1.8, and Sr-1.8 samples, respectively. The thermoelectric properties depend on the chemical composition of the BC-2202 phase. The BC-2202 material thus appears to be a promising thermoelectric material due to its high performance at high temperature (\u223c1000 K).<\/jats:p>","DOI":"10.1063\/1.126354","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T13:29:07Z","timestamp":1027690147000},"page":"2385-2387","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":232,"title":["Thermoelectric properties of Bi2Sr2Co2Ox polycrystalline materials"],"prefix":"10.1063","volume":"76","author":[{"given":"Ryoji","family":"Funahashi","sequence":"first","affiliation":[{"name":"Osaka National Research Institute, Midorigaoka, Ikeda, Osaka\u2009563-8577, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ichiro","family":"Matsubara","sequence":"additional","affiliation":[{"name":"Osaka National Research Institute, Midorigaoka, Ikeda, Osaka\u2009563-8577, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Satoshi","family":"Sodeoka","sequence":"additional","affiliation":[{"name":"Osaka National Research Institute, Midorigaoka, Ikeda, Osaka\u2009563-8577, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","reference":[{"key":"2024020317594319100_r1","doi-asserted-by":"crossref","first-page":"R12685","DOI":"10.1103\/PhysRevB.56.R12685","volume":"56","year":"1997","journal-title":"Phys. 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