Improvement of Thermoelectric Material by Reduction Thermal Conductivity of Sn-doped CuFeO2 Delafossite Compound

被引：1

作者：

Hongaromkij, Y. ^{[1
]}

Rudradawong, C. ^{[1
]}

Wichainchai, A. ^{[1
]}

Ruttanapun, C. ^{[1
]}

机构：

[1] King Mongkuts Inst Technol Ladkrabang, Dept Phys, Fac Sci, Bangkok 10520, Thailand

来源：

INTEGRATED FERROELECTRICS | 2015年 / 165卷 / 01期

关键词：

CuFeO2; thermoelectric oxide; delafossite structure; lattice thermal conductivity; mass fluctuation; OXIDE; POINT;

D O I：

10.1080/10584587.2015.1062685

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work, the polycrystalline CuFe1-xSnxO2 (x = 0.005, 0.01, 0.03) were synthesized by a solid state reaction method with sintering temperature at 1323K for 40hours. The XRD pattern and TGA results showed the crystal structure of hexagonal delafossite-type structure for space group R (3) over barm (166). Thermal conductivity was decreased because the large atomic mass of the Sn substituted to the Fe sites of CuFeO2. This caused phonon scattering by the point defect of the mass difference between Sn atom and Fe atom. The minimal value of the thermal conductivity was 2.1W/mK at 573K for Sn = 0.03.

引用

页码：73 / 80

页数：8

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