Author
J. Livage
Bio: J. Livage is an academic researcher. The author has contributed to research in topics: Conductivity. The author has an hindex of 1, co-authored 2 publications receiving 17 citations.
Topics: Conductivity
Papers
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18 citations
01 Jan 1984
1 citations
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TL;DR: In this article, synthetic hydroxyapatites containing metal oxides were precipitated from solution and characterized using both structural and chemical techniques, and the electrical conductivity of the resulting frequency-dependent conductivity displays a behavior characteristic of structurally distorted solid electrolytes.
64 citations
TL;DR: In this paper, the capacity of sodalite to structurally incorporate pyroprocessing salts, K, Li, Cs, Sr, Ba and La, was studied by X-ray diffraction and scanning electron microscopy after sintering in the range of 800-1000°C.
55 citations
TL;DR: In this paper, the authors studied the extraction of fluoride from various phosphates using a steam atmosphere at various temperatures and established a correlation between the fluoride mobility in the structure and its extraction.
24 citations
TL;DR: In this paper, the authors discuss chemical composition, structure, synthetic procedure and ionic conduction of apatite-type materials and briefly review recent improvements are briefly reviewed, and show that some rare earth silicates, e.g., La10(SiO4)6O3, exhibit quite high oxide-ion conductivity.
Abstract: Apatite is a mineral with general formula M10(XO4)6Z2, where M are metallic elements such as Li+, Na+, K+, Ca2+, Sr2+, Ba2+, Ln3+ etc.; X=P, V, S, Si, Ge, Re, Cr etc; Z=F−, Cl−, I−, OH−, O2−, S2− etc. Some materials with apatite structure (S.G. P63/m) exhibit quite high cationic (Li+, H+ etc.) and/or anionic (F−, Cl− etc.) conduction. Recently, it was reported that some rare earth silicates, e.g., La10(SiO4)6O3, exhibit quite high oxide-ion conductivity. In this paper, we discuss chemical composition, structure, synthetic procedure and ionic conduction of apatite-type materials. Recent improvements are briefly reviewed. High ionic conductivity has been observed for both cation deficient, oxygen stoichiometric La9.33(SiO4)6O2 and cation stoichiometric, oxygen excess La10(SiO4)6O3 compositions. Grain boundary conductivity is usually low, which tends to dominate the impedance response. The resistance, particularly the grain boundary resistance is also found to depend on pO2.
23 citations
TL;DR: In this paper, the structure of Pb6Li2Ca2(PO4)6 was determined by X-ray diffraction study on single crystal revealed that the compound is isostructural to the hexagonal phase Pb8Na2(Pb4Na2)6.
22 citations