Two-level systems in nonstoichiometric f luorite phases
Kazanskii S. A.
A study of the microwave dielectric properties of solid solutions (MF2),_X (RF3)*, where Μ = Ca, Sr, Ba; R — Lu, Y; and 3 X 10~3<л;<(ХЗ, reveals two-level systems. Such systems have not previously been seen for structures of the fluorite type. They indicate a change in the structure of the crystal lattice in these compounds.
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