| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a thermoelectric material that has low toxicity and is of high-performance half-Heusler compound system and to provide a thermoelectric transducer as well, that exercises better performance, using this thermoelectric material. <P>SOLUTION: This is a thermoelectric material that is expressed as the composition formula (Ti<SB>a1</SB>Zr<SB>b1</SB>Hf<SB>c1</SB>)<SB>x</SB>Ni<SB>y</SB>Sn<SB>100-x-y</SB>(where 0<a1<1, 0<b1<1, 0<c1<1, a1+b1+c1=1, 30≤y≤35), has a MgAgAs-type crystal phase with two or more phases of different lattice constants, and has a value of I<SB>1</SB>/(I<SB>1</SB>+ I<SB>2</SB>) which is in a range of 0.2 to 0.8, when I<SB>1</SB>is a diffracted peak intensity from a (422) diffracting plane of the MgAgAs-type crystal phase having the smallest lattice constant in X-ray diffraction; and I<SB>2</SB>is the diffracted peak intensity from the (422) diffraction plane of the MgAgAs-type crystal phase having the largest lattice constant. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
