Incommensurate modulations in a hollandite phase Bax(Al, Fe)2xTi8–2xO16 intended for the storage of radioactive wastes: a (3+1) dimension structure determination
作者： Virginie Aubin-Chevaldonnet , Philippe Deniard , Michel Evain , Aude Ysoline Leinekugel-Le-Cocq-Errien , Stéphane Jobic
DOI: 10.1524/ZKRI.2007.222.8.383
关键词: Flux method 、 Single crystal 、 Barium 、 Chemistry 、 Crystallography 、 Hollandite 、 Caesium 、 Phase (matter) 、 Crystal growth 、 Chemical stability 、 Analytical chemistry
摘要: Intensive researches on specific treatments of radioactive cesium, occurring in high level nuclear wastes, are progress France. Nowadays, a cesium immobilization host matrices with chemical durability seems to be the favourite option. In that perspective, titanium based upon hollandite is good candidate as matrix because its incorporation ability, excellent stability, and capacity support charge compensation during Cs + into Ba 2+ transmutation process. this study we report preparation crystal growth BaF 2 -B O 3 flux melt x y M z Ti 8-z 16 phase characterization by single X-ray diffraction. An attention was focused materials = Al or Fe barium only since crystals including could not obtained from method. incommensurate modulation cation site occupancy, I4/m(00γ)00 superspace group, observed for all under study.
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