Structural, Electrical and Morphological Properties of Materials Type Sillenite Phase Bi12TiO20

AitOulahyane, Hajar; Loubbidi, L.; Chagraoui, Abdeslam; Bourja, L.; Villain, S.; Ahmed, O. Ait Sidi; Moussaoui, A.; Menichi, Aziz

doi:10.1007/s42250-018-0025-5

Cited by 2 publications

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“…Indeed the sillente phase is isolated for the first time by Silen in 1937 and admits as formula Bi12MO20 (M= Si, Ti, Ge) 9 . Several studies have been conducted, in particular on the crystalline structure, such as those of Levin and Roth 10 , and Radev et al 11 that have determined the crystal structure of Bi12 (Bi2/3 Zn1/3) O19.33 and Bi12 ( 0.5…”

Section: Introductionmentioning

confidence: 99%

Structural and vibrational spectroscopic studies of new phases with sillenite type in the system Bi2O3- In2O3 –MgO

et al. 2020

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The anion and cation deficient phase Bi0.95 In0.05 O1.5 (Bi1.9 In0.1 O3) was synthesized and experimentally investigated using X-ray diffraction and vibrational spectroscopy (Infrared and Raman). The non-stoichiometric phases are similar to sillenite family type γBi2O3 and crystallize in the I23 space group. The crystal structure was determined by full profile Rietveld analysis of the powder diffractogram. It is formed by a sequence of BiO5E polyhedra (E lone pair of bismuth) and MO4 polyhedra (M = In, Mg). The set of MO4 polyhedra are localized in cavities generated by BiO5E polyhedra. The vibrational spectroscopic study revealed the existence of three regions; low, intermediate and high-frequency region. They are attributed to Bi-O stretching mode, In / Mg-O vibrations and cationic displacements respectively.

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Section: Introductionmentioning

confidence: 99%