Thermoelectric properties of ruddlesden-popper phase n-type semiconducting oxides:: La-, Nd-, and Nb-doped Sr3Ti2O7

被引：21

作者：

Lee, Kyu Hyoung

Wang, Yi Feng

Kim, Sung Wng

Ohta, Hiromichi

Koumoto, Kunihito

机构：

[1] Japan Sci & Technol Agcy, CREST, Kawaguchi 3320012, Japan

[2] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan

[3] Tokyo Inst Technol, Frontier Collaborat Res Ctr, Yokohama, Kanagawa 2268503, Japan

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2007年 / 4卷 / 04期

关键词：

D O I：

10.1111/j.1744-7402.2007.02147.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report herein on Ruddlesden-Popper-type doped Srn+1TinO3n+1 (n=2) as a potential candidate for n-type thermoelectric (TE) oxides. The TE properties of 5 at.% La-, Nd-, and Nb-doped Sr3Ti2O7 polycrystalline ceramics were investigated and the origin of Seebeck coefficient was discussed from the viewpoint of the symmetry of TiO6 octahedra. A significant reduction in the lattice thermal conductivity was observed by the enhancement of phonon scattering at SrO/(SrTiO3)(n) interfaces originating from the inherent superlattice structure, and the maximum dimensionless figure of merit, ZT similar to 0.15, at a 1000 K value was obtained in 5 at.% La-doped Sr3Ti2O7.

引用

收藏

页码：326 / 331

页数：6

相关论文

共 20 条

[1] Electronic and optical properties of anatase TiO2 [J].

Asahi, R ;

Taga, Y ;

Mannstadt, W ;

Freeman, AJ .

PHYSICAL REVIEW B, 2000, 61 (11) :7459-7465

[2] An oxide single crystal with high thermoelectric performance in air [J].

Funahashi, R ;

Matsubara, I ;

Ikuta, H ;

Takeuchi, T ;

Mizutani, U ;

Sodeoka, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2000, 39 (11B) :L1127-L1129

[3] Electrical properties of yttrium-doped strontium titanate under reducing conditions [J].

Hui, SQ ;

Petric, A .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (01) :J1-J10

[4] A Rietveld-analysis program RIETAN-98 and its applications to zeolites [J].

Izumi, F ;

Ikeda, T .

EUROPEAN POWDER DIFFRACTION, PTS 1 AND 2, 2000, 321-3 :198-203

[5] Carrier generation and transport properties of heavily Nb-doped anatase TiO2 epitaxial films at high temperatures [J].

Kurita, Daisuke ;

Ohta, Shingo ;

Sugiura, Kenji ;

Ohta, Hiromichi ;

Koumoto, Kunihito .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (09)

[6] Thermoelectric properties of layered perovskite-type (Sr1-xCax)3(Ti1-yNby)2O7 [J].

Lee, Kyu Hyoung ;

Kim, Sung Wng ;

Ohta, Hiromichi ;

Koumoto, Kunihito .

JOURNAL OF APPLIED PHYSICS, 2007, 101 (08)

[7] Ruddlesden-Popper phases as thermoelectric oxides:: Nb-doped SrO(SrTiO3)n (n=1,2) [J].

Lee, Kyu Hyoung ;

Kim, Sung Wng ;

Ohta, Hiromichi ;

Koumoto, Kunihito .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (06)

[8] Thermal conductivity of Si-Ge superlattices [J].

Lee, SM ;

Cahill, DG ;

Venkatasubramanian, R .

APPLIED PHYSICS LETTERS, 1997, 70 (22) :2957-2959

[9] Phase stability and interfacial structures in the SrO-SrTiO3 system [J].

McCoy, MA ;

Grimes, RW ;

Lee, WE .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1997, 75 (03) :833-846

[10] Thermoelectric properties of doped BaTiO3-SrTiO3 solid solution [J].

Muta, H ;

Kurosaki, K ;

Yamanaka, S .

JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 368 (1-2) :22-24