| 摘要 |
The present invention provides a novel complex oxide capable of achieving high performance as a p-type thermoelectric material. The complex oxide comprises a layer-structured oxide represented by the formula Bi<SUB>a</SUB>Pb<SUB>b</SUB>M<SUP>1</SUP><SUB>c</SUB>CO<SUB>d</SUB>M<SUP>2</SUP><SUB>e</SUB>O<SUB>f </SUB>wherein M<SUP>1 </SUP>is one or more elements selected from the group consisting of Na, K, Li, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Pb, Ca, Sr, Ba, Al, Y, and lanthanoids; M<SUP>2 </SUP>is one or more elements selected from the group consisting of Ti, V, Cr, Mn, Fe, Ni, Cu, Mo, W, Nb, Ta, and Ag; 1.8<=a<=2.5; 0<=b<=0.5; 1.8<=c<=2.5; 1.6<=d<=2.5; 0<=e<=0.5; and 8<=f<=10; and at least one interlayer component selected from the group consisting of F, Cl, Br, I, HgF<SUB>2</SUB>, HgCl<SUB>2</SUB>, HgBr<SUB>2</SUB>, HgI<SUB>2</SUB>, TlF<SUB>3</SUB>, TlCl<SUB>3</SUB>, TlBr<SUB>3</SUB>, TlI<SUB>3</SUB>, BiF<SUB>3</SUB>, BiCl<SUB>3</SUB>, BiBr<SUB>3</SUB>, BiI<SUB>3</SUB>, PbF<SUB>2</SUB>, PbCl<SUB>2</SUB>, PbBr<SUB>2</SUB>, and PbI<SUB>2</SUB>. The interlayer component being present between layers of the layer-structured oxide.
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