Title :
Thermoelectric properties of Nb-doped SrO(SrTiO3)1 epitaxial films
Author :
Lee, K.H. ; Ishizaki, A. ; Ohta, H. ; Koumoto, K.
Author_Institution :
Japan Sci. & Technol. Agency, Kawaguchi
Abstract :
Thermoelectric properties of the heavily Nb-doped SrO(SrTiO3)1 were investigated over a wide temperature range (20 - 800 K) by the preparation of c-axis-oriented epitaxial films. The films were grown heteroepitaxially on the (001)-face of the LaAlO3 substrate with an epitaxial relationship of (001) [100] Nb-doped SrO(SrTiO3)1 par (001) [100] LaAlO3. The thermoelectric properties of the Nb-doped SrO(SrTiO3)1 epitaxial films were enhanced compared with those of the polycrystalline ceramics, and the electronic transport occurred predominantly in the SrTiO3 layers.
Keywords :
ceramics; doping; epitaxial growth; epitaxial layers; lanthanum compounds; neodymium; pulsed laser deposition; strontium compounds; thermoelectricity; LaAlO3; SrO(SrTiO3):Nd; c-axis-oriented epitaxial films; electronic transport; heteroepitaxial growth; polycrystalline ceramics; pulsed laser deposition; temperature 20 K to 800 K; thermoelectric property; Ceramics; Insulation; Optical films; Substrates; Surface morphology; Tellurium; Temperature; Thermal conductivity; Thermoelectricity; X-ray diffraction;
Conference_Titel :
Thermoelectrics, 2007. ICT 2007. 26th International Conference on
Conference_Location :
Jeju Island
Print_ISBN :
978-1-4244-2262-3
Electronic_ISBN :
1094-2734
DOI :
10.1109/ICT.2007.4569442
