Thermal conductivity of half-Heusler superlattices

Jaeger, Tino ; Holuj, Paulina ; Mix, Christian ; Euler, Christoph ; Aguirre, Myriam Haydee (Universidad de Zaragoza) ; Populoh, Sascha ; Weidenkaff, Anke ; Jakob, Gerhard

Resumen: Thin films and superlattices (SLs) of TiNiSn and Zr Hf NiSn layers have been grown by dc magnetron sputtering on MgO (100) substrates to reduce the thermal conductivity, aiming for improvement of the thermoelectric figure of merit ZT. The thermal conductivity of 1 Wm−1K−1 was measured by the differential 3ω method for an SL with a periodicity of 8.8 nm. In addition to x-ray diffraction analysis of the SL crystal structure, smooth interfaces were confirmed by scanning/transmission electron microscopy.

Idioma: Inglés

DOI: 10.1088/0268-1242/29/12/124003

Año: 2014

Publicado en: SEMICONDUCTOR SCIENCE AND TECHNOLOGY 29, 12 (2014), 124003 [5 pp.]
ISSN: 0268-1242

Factor impacto JCR: 2.19 (2014)

Categ. JCR: ENGINEERING, ELECTRICAL & ELECTRONIC rank: 52 / 247 = 0.211 (2014) - Q1 - T1
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 24 / 66 = 0.364 (2014) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 75 / 257 = 0.292 (2014) - Q2 - T1

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)