2017/11/03 by Julia Hidde, Christo Guguschev, Steffen Ganschow +1
Chemistry · Materials Science · Physics and Astronomy · #Analytical Chemistry (journal) #Chemistry #Composite material #Differential scanning calorimetry #Electronic and Structural Properties of Oxides #Ferroelectric and Piezoelectric Materials #Heat capacity #Laser #Laser flash analysis #Materials science #Optics #Physics #Sapphire #Thermal #Thermal Expansion and Ionic Conductivity #Thermal conductivity #Thermal conductivity measurement #Thermal diffusivity #Thermodynamics #cond-mat.mtrl-sci
paper · pdf · doi:10.1016/j.jallcom.2017.12.172
published as J. Alloys. Compd. 738 (2018) 415-421 · 15 pages, 4 figures, submitted to J. Alloys. Compd
arxiv created 2017/11/03 · openalex publication_date 2017/12/20 · arxiv updated 2018/01/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
High-temperature thermal properties of three neighboring rare-earth scandates DyScO3, TbScO3 and GdScO3 were compared to La0.29Sr0.71Al0.65Ta0.35O3 (LSAT) and sapphire. To calculate thermal conductivity, heat capacity and thermal diffusivity were measured by differential scanning calorimetry and laser flash technique, respectively. DyScO3 and TbScO3 showed an untypical rise in the thermal conductivity above 900 K, while for GdScO3, LSAT and sapphire the expected decrease at elevated temperatures could be observed. These results lead to the proposal of a new type of heat transport by migrating ions.