Density and thermal expansion of samarium in a wide temperature range
Yu.M. Kozlovskii, S.V. Stankus
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: термический коэффициент линейного расширения, плотность, самарий, высокие и низкие температуры, непрерывный фазовый переход, полиморфное превращение, критический индекс, точка Нееля, linear thermal expansion coefficient, density, samarium, high and low temperatures, continuous phase transition, polymorphic transformation, critical index, Néel point
Abstract
The results of a dilatometric study of the linear thermal expansion coefficient (LTEC) of polycrystalline samarium in the temperature range of 110-1050 K are presented. Temperature dependences have been obtained and reference tables of recommended values of thermal properties for the 110-1900 K interval of its solid and liquid states have been calculated. The nature of the LTEC change in the regions of phase transformations of the first and second kinds has been established. The critical indices of the linear thermal expansion coefficient at the Néel point have been determined.
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