Thermoelectric properties of Nb-doped (Nd0.55Li0.36)TiO3bulk ceramics with superlattice structure

Yaoshuai Ba; Yifeng Wang; Chunlei Wan; Wataru Norimatsu; Michiko Kusunoki; Dechun Ba; Kunihito Koumoto

doi:10.1016/j.jallcom.2015.12.231

Thermoelectric properties of Nb-doped (Nd_0.55Li_0.36)TiO₃bulk ceramics with superlattice structure

Yaoshuai Ba, Yifeng Wang, Chunlei Wan, Wataru Norimatsu, Michiko Kusunoki, Dechun Ba, Kunihito Koumoto

College of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We report the thermoelectric properties of Nb-doped (Nd_0.55Li_0.36)TiO₃ bulk ceramics prepared by the conventional sintering method. Superlattice structure present throughout the crystalline grain was observed and a glass-like thermal conductivity (∼2 W/m·K) was obtained. The electrical properties of (Nd_0.55Li_0.36)TiO₃ were improved due to the Ti-site-Nb-doping. The low solid solubility of Nb and the distortion of TiO₆ octahedron impaired the electrical performance of Nb-doped (Nd_0.55Li_0.36)TiO₃. The sample with 5 at%Nb gave the maximum ZT value of 0.05 at 650 K. This work is helpful for the design of novel oxide thermoelectric materials.

Original language	English
Pages (from-to)	487-491
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	664
DOIs	https://doi.org/10.1016/j.jallcom.2015.12.231
State	Published - 15 Apr 2016

Keywords

Ceramics
Nanostructured materials
Oxide materials
Thermoelectric

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10.1016/j.jallcom.2015.12.231

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title = "Thermoelectric properties of Nb-doped (Nd0.55Li0.36)TiO3bulk ceramics with superlattice structure",

abstract = "We report the thermoelectric properties of Nb-doped (Nd0.55Li0.36)TiO3 bulk ceramics prepared by the conventional sintering method. Superlattice structure present throughout the crystalline grain was observed and a glass-like thermal conductivity (∼2 W/m·K) was obtained. The electrical properties of (Nd0.55Li0.36)TiO3 were improved due to the Ti-site-Nb-doping. The low solid solubility of Nb and the distortion of TiO6 octahedron impaired the electrical performance of Nb-doped (Nd0.55Li0.36)TiO3. The sample with 5 at%Nb gave the maximum ZT value of 0.05 at 650 K. This work is helpful for the design of novel oxide thermoelectric materials.",

keywords = "Ceramics, Nanostructured materials, Oxide materials, Thermoelectric",

author = "Yaoshuai Ba and Yifeng Wang and Chunlei Wan and Wataru Norimatsu and Michiko Kusunoki and Dechun Ba and Kunihito Koumoto",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

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doi = "10.1016/j.jallcom.2015.12.231",

language = "英语",

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T1 - Thermoelectric properties of Nb-doped (Nd0.55Li0.36)TiO3bulk ceramics with superlattice structure

AU - Ba, Yaoshuai

AU - Wang, Yifeng

AU - Wan, Chunlei

AU - Norimatsu, Wataru

AU - Kusunoki, Michiko

AU - Ba, Dechun

AU - Koumoto, Kunihito

PY - 2016/4/15

Y1 - 2016/4/15

N2 - We report the thermoelectric properties of Nb-doped (Nd0.55Li0.36)TiO3 bulk ceramics prepared by the conventional sintering method. Superlattice structure present throughout the crystalline grain was observed and a glass-like thermal conductivity (∼2 W/m·K) was obtained. The electrical properties of (Nd0.55Li0.36)TiO3 were improved due to the Ti-site-Nb-doping. The low solid solubility of Nb and the distortion of TiO6 octahedron impaired the electrical performance of Nb-doped (Nd0.55Li0.36)TiO3. The sample with 5 at%Nb gave the maximum ZT value of 0.05 at 650 K. This work is helpful for the design of novel oxide thermoelectric materials.

AB - We report the thermoelectric properties of Nb-doped (Nd0.55Li0.36)TiO3 bulk ceramics prepared by the conventional sintering method. Superlattice structure present throughout the crystalline grain was observed and a glass-like thermal conductivity (∼2 W/m·K) was obtained. The electrical properties of (Nd0.55Li0.36)TiO3 were improved due to the Ti-site-Nb-doping. The low solid solubility of Nb and the distortion of TiO6 octahedron impaired the electrical performance of Nb-doped (Nd0.55Li0.36)TiO3. The sample with 5 at%Nb gave the maximum ZT value of 0.05 at 650 K. This work is helpful for the design of novel oxide thermoelectric materials.

KW - Ceramics

KW - Nanostructured materials

KW - Oxide materials

KW - Thermoelectric

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U2 - 10.1016/j.jallcom.2015.12.231

DO - 10.1016/j.jallcom.2015.12.231

M3 - 文章

AN - SCOPUS:84954091955

SN - 0925-8388

VL - 664

SP - 487

EP - 491

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Thermoelectric properties of Nb-doped (Nd_0.55Li_0.36)TiO₃bulk ceramics with superlattice structure

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Keywords

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