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of 107
pro vyhledávání: '"A Guehria-Laı̈doudi"'
Publikováno v:
In Journal of Rare Earths January 2013 31(1):85-93
Autor:
Rahahlia, Narimène, Benmerad, Belkacem, Guehria-Laïdoudi, Achoura, Dahaoui, Slimane, Lecomte, Claude
Publikováno v:
In Journal of Molecular Structure 2007 833(1):42-48
Publikováno v:
In Journal of Molecular Structure 2007 832(1):150-155
Publikováno v:
In Solid State Sciences 2006 8(6):613-618
Publikováno v:
Phase Transitions. 74:521-529
The ac conductivity of three fluorides of A2MII+ MIII + F9 type, Sr2NiAlF9, Sr2ZnGaF9 and Ba2MnCrF9, between 293 and 773K, has been analyzed within a combined complex impedance and modulus formalism. The antiferroelectric-paraelectric phase transitio
Publikováno v:
Journal of Fluorine Chemistry. 105:71-76
New dielectric oxyfluoride ceramics have been obtained in the ternary system BaTiO 3 –BaZrO 3 –CaLiF 3 . X-ray powder diffraction studies determined the limits of perovskite-type solid solutions. Dielectric measurements were performed over the fr
Publikováno v:
Journal of Fluorine Chemistry. 103:35-40
Resume Study of the Sr 5 Ga 3 F 19 _ Sr 2 ZnGaF 9 system shows two solid solutions derived from the two limit phases. The first close to Sr 5 Ga 3 F 19 is disordered with Zn 2+ and Ga 3+ statistically in the octahedral sites; it shows a ferroelectric
Publikováno v:
Materials Letters. 42:189-193
New dielectric oxyfluoride ceramics have been obtained in the ternary system BaTiO 3 BaZrO 3 BaLiF 3 . X-ray powder diffraction studies allowed to determine the limits of solid solutions. Dielectric measurements were performed in the frequency
Publikováno v:
Journal of Fluorine Chemistry. 92:1-5
Solid solutions of formula Pb 5− x Mg 2 x Cr 3− x F 19− x ; Pb 5−5 x Sr 4 x Mg 2 x Cr 3− x F 19− x and Pb 5−5 x Sr 4 x Zn 2 x Ga 2 x Cr 3−3 x F 19− x were found in systems Pb 5 Cr 3 F 19 –A 2 M II M III F 9 (A=Sr,Pb; M II =Mg, Zn;
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