Solid solution with fluorite structure in the CaF₂ ‐ LaF₃ system

Abstract

were measured at concentrations covering almost whale region of the C a~-~I a f~, solid solution formatian. They are characterized by increasing conducti ty an decreasing activation energy with increasing LaF3 concentrations. In aamples with x > 0 , l l an increase of electrical conductivity due to aging was observed.solid solutions in the CaF2 -Both dc / from 20 to 450 O C / and ac / from 450 to 600 oc / electrical $onductivities

Thermodynamic investigation of the (LiF+NaF+CaF2+LaF3) system

“…In order to keep electroneutrality equation (9) has to be respected. In this equation q(A) and q(B) are the charge numbers of mixing cations A and B, respectively and q(F) is the charge number of the (F À ) anion.…”

“…This system was experimentally investigated by Švantner et al [9] and Ippolitov et al [10]. Both of them reported a simple eutectic system with large ranges of solid solubility on both sides as shown in figure 2.…”

“…This study parameters the dataset of Švantner et al [9] was preferred because in their work the solid state solubility is much better described.…”

Investigation on Crystallization and Optical Properties of Ca1−xLaxF2+x Glass‐Ceramics

“…As witnessed in this figure, the expansion of cubic CaF 2 lattice with increasing the heat‐treatment time and temperature, indicates the formation of Ca 1 −x La x F 3 with different x values. To determine this x value, the results of Svantner et al . were used.…”

Preparation of Single Crystals of the Nonstoicmometric Fluorite Phases M1-xRxF2+x (M = Ca, Sr, Ba; R = Rare Earth Elements) by the Bridgman-Stockbarger Method

“…Studies of fluoride ion transport in M I -N2+x crystals as a result of disturbed atomic structure (anionic motif) is one of the most complete programs which describe grossly nonstoichiometric fluoride materials [46][47][48][49][50][51][52][53][54][55][56]. where the effect of structural defectiveness of the phases on the ionic conduction has been shown to be .…”