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Structural transformation between two cubic phases of (NH4)3SnF7
Reinvestigations of the room temperature structure of ammonium heptafluorostannate (NH4)(3)SnF7=(NH4)(2)SnF6 center dot NH4F = (NH4)(3)[SnF6]F by both powder and single crystal X-ray diffractions have revealed that its ...
Optical and calorimetric studies of K2TaF7
Optical and calorimetric experiments on K2TaF7 are performed in a wide temperature range. No features were found in the behavior of the birefringence Δnb(T), the angle of rotation of the indicatrix ϕ(T) and the heat capacity ...