naa a22 4500 510801641 CHVBK 20180411083358.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-012-2436-4 doi (NATIONALLICENCE)springer-10.1007/s11664-012-2436-4 Percolation Conduction in Hybrid Thermoelectric Material Consisting of Bi0.88Sb0.12 and Barium Ferrite Particles [Elektronische Daten] [Do Lam, Tomoki Ariga, Kouhei Takahashi, Koichiro Suekuni, Mikio Koyano] A hybrid material consisting of thermoelectric Bi0.88Sb0.12 and Ba ferrite Bi0.88Sb0.12(BaFe12O19) x (x=0, 0.025, 0.04, and 0.08) was synthesized using sintering. Powder x-ray diffraction patterns and scanning electron microscopy images of the hybrid indicate that the BaFe12O19 particles were well distributed in the host Bi0.88Sb0.12 phase. The temperature dependence of the electrical resistivity ρ of the host Bi-Sb exhibits metallic behavior. By the addition of Ba ferrite particles, the ρ at 300K increases intensively, and ρ(Τ) then behaves similarly to a semiconductor. However, it is noted that the thermoelectric power S is unchanged. Inhibition of current and heat flows by a restricted conduction path and the unchanged electromotive force generated by the Seebeck effect in the conduction path can be understood based on a site-percolation model consisting of conducting Bi-Sb and insulating Ba ferrite. The critical volume fraction p c of this system was estimated experimentally as p c=0.68. TMS, 2013 Thermoelectric nationallicence bismuth-antimony nationallicence magnetic particle nationallicence hybrid nationallicence percolation nationallicence Lam Do School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut Ariga Tomoki School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut Takahashi Kouhei School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut Suekuni Koichiro School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut Koyano Mikio School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 2350-2355 0361-5235 42:7<2350 2013 42 11664 https://doi.org/10.1007/s11664-012-2436-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2436-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lam Do School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut NATIONALLICENCE 700 1- Ariga Tomoki School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut NATIONALLICENCE 700 1- Takahashi Kouhei School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut NATIONALLICENCE 700 1- Suekuni Koichiro School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut NATIONALLICENCE 700 1- Koyano Mikio School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, 923-1292, Nomi, Ishikawa, Japan aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 2350-2355 0361-5235 42:7<2350 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer