Heat capacity and thermal expansion of samarium titanate

• Published in: Materials letters 2011-06, Vol.65 (12), p.1778-1780
• Main Authors: Panneerselvam, G., Venkata Krishnan, R., Nagarajan, K., Antony, M.P.
• Format: Article
• Language: English
• Subjects: Differential scanning calorimetry; Diffraction; heat; Heat capacity; Samarium; Samarium titanate; Specific heat; temperature; Thermal expansion; Titanate; Titanates; X-ray diffraction; X-rays
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2011.03.051

Samarium titanate (Sm2TiO5) was prepared by solid-state synthesis and characterized by X-ray diffraction (XRD). Heat capacity measurements were carried out by differential scanning calorimeter (DSC) in the temperature range 298–800K. Thermal expansion characteristics have been studied by high temperature X-ray diffraction technique (HTXRD) in the temperature range 298–1573K. The heat capacity value at 298K is 170JK−1mol−1. The percentage linear thermal expansion in the temperature range 298–1573K along a, b and c axes are 0.96, 0.89 and 1.07 respectively. The average coefficient of thermal expansion value obtained in the present study for samarium titanate up to 1573K is 10.8×10−6K−1. ► Samarium titanate was prepared by solid-state route and characterized by X-ray diffraction method. ► Heat capacity measurements were carried out by DSC in the temperature range 298–800 K. ► Thermal expansion measurements were carried out by high temperature X-ray diffraction method in the temperature range 298–1573 K. ► The above data are not available in the literature and are reported for the first time.