Multifold Seebeck increase in RuO2 films by quantum-guided lanthanide dilute alloying

被引：11

作者：

Music, Denis ^{[1
]}

Basse, Felix H. -U. ^{[1
]}

Han, Liang ^{[2
]}

Devender ^{[3
]}

Borca-Tasciuc, Theo ^{[2
]}

Gengler, Jamie J. ^{[4
,5
]}

Voevodin, Andrey A. ^{[4
]}

Ramanath, Ganpati ^{[1
,3
]}

Schneider, Jochen M. ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, D-52074 Aachen, Germany

[2] Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA

[3] Rensselaer Polytech Inst, Mat Sci & Engn Dept, Troy, NY 12180 USA

[4] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA

[5] Spectral Energies LLC, Dayton, OH 45431 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 05期

关键词：

OXIDE THERMOELECTRIC-MATERIALS; INITIO MOLECULAR-DYNAMICS; TRANSITION; POWER;

D O I：

10.1063/1.4864078

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ab initio predictions indicating that alloying RuO2 with La, Eu, or Lu can increase the Seebeck coefficient alpha manifold due to quantum confinement effects are validated in sputter-deposited La-alloyed RuO2 films showing fourfold alpha increase. Combinatorial screening reveals that alpha enhancement correlates with La-induced lattice distortion, which also decreases the thermal conductivity twentyfold, conducive for high thermoelectric figures of merit. These insights should facilitate the rational design of high efficiency oxide-based thermoelectrics through quantum-guided alloying. (C) 2014 AIP Publishing LLC.

引用

页数：5

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