Synthesis, structural and dielectric properties of SrBi2−xLaxNb2O9 ceramics prepared by hydrothermal treatment

Afqir, Mohamed; Tachafine, Amina; Fasquelle, Didier; Elaatmani, M.; Carru, Jean-Claude; Zegzouti, Abdelouahad; Daoud, Mohamed

doi:10.1007/s00339-017-1517-x

Cited by 4 publications

(1 citation statement)

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“…The outcome is found to be depended especially on precursors and how to choose the calcination temperature and time duration. The crystalline phase in the SrBi 2 Nb 2 O 9 samples tackes place at 1180, 800 and 500 °C when used solid state route, hydrothermal method and hybrid process (co-precipitation-hydrothermal) [5][6][7][8]. A small change was observed in the lattice parameter value, which indicates that the expansion is slightly greater in the unit cell for solid-state route than in the co-precipitation method.…”

Section: Introductionmentioning

confidence: 93%

Morphology control of SrBi2Nb2O9 prepared by a modified chemical method

et al. 2019

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SrBi 2 NbO 9 compounds were prepared through three methods: oxalate coprecipitation, molten salt synthesis and polymerizable complex. The effect of the molecular precursor route has also been investigated. For oxalate co-precipitation method, a solution obtained from acid oxalate, niobium oxide, bismuth nitrate and strontium nitrate are precipitated by ammoniac solution. Then, the precipitated sample is calcined at 1100 °C. A methanol-citric acid solution of solution of NbCl 5 , ethylene glycol, bismuth and strontium nitrates were used as precursors. A black powder ash was crystallized by heat-treating at 1100 °C. Molten salt technique using oxides and carbonate as starting materials and NaCl and KCl to form a reaction medium. The formation temperature was at 1110 °C. Multiple characterizations mainly X-ray diffraction, Fourier transformed infrared spectroscopy and scanning electron microscopy (SEM) measurements have provided to validate the structural feature. Careful, X-ray diffraction analysis showed the presence of two-layered Aurivillius structure. The crystallite size is discussed by Scherrer and Williamson-Hall approaches. SEM images of SrBi 2 NbO 9 ceramics showed plate-like, polygonal and structureless morphologies obtained at different synthesis conditions. Whatever the synthesis process, there is no change on the band of infrared spectra.

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Section: Introductionmentioning

confidence: 93%

Morphology control of SrBi2Nb2O9 prepared by a modified chemical method

et al. 2019

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Exploration mixture of salts in synthesis SrBi2Nb2O9 aurivillius phase doped with Ba2+ and La3+ using molten salts method

Zulhadjri,

Pratiwi,

Wendari

et al. 2024

3RD CONFERENCE ON INNOVATION IN TECHNOLOGY AND ENGINEERING SCIENCE 2022 (CITES2022): Innovation in Technology and Science for N

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Hydrothermal synthesis of ABi2Ta2O9Aurivillius phase: A comparative study of A-site cation size on structure, dielectric, optical properties

et al. 2021

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In this study, the double-layered Aurivillius phases CaBi2Ta2O9 (CBT) and PbBi2Ta2O9 (PBT) were prepared through a hydrothermal route with NaOH as a mineralizer. XRD analysis confirmed that the CBT and PBT compounds were successfully formed and adopted an orthorhombic crystal structure with an [Formula: see text]21am symmetry. Le Bail refinements of XRD data indicated that the unit cell volume of CBT was smaller than PBT and is associated with the smaller ionic radius of Ca[Formula: see text] compared to Pb[Formula: see text]. The surface morphology of both samples, as determined using SEM, demonstrated plate-like grains with anisotropic grain growth. It was found that the different ionic radii of [Formula: see text]-site cations (Ca[Formula: see text] and Pb[Formula: see text] strongly affected the structural, optical and electrical properties of the Aurivillius phase. The occupation of smaller Ca[Formula: see text] cations induced a higher structural distortion, which resulted in higher bandgap ([Formula: see text] energy and ferroelectric transition temperature ([Formula: see text] of CBT, compared to those of PBT.

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Synthesis, structural and dielectric properties of SrBi2−xLaxNb2O9 ceramics prepared by hydrothermal treatment

Cited by 4 publications

References 28 publications

Morphology control of SrBi2Nb2O9 prepared by a modified chemical method

Morphology control of SrBi2Nb2O9 prepared by a modified chemical method

Exploration mixture of salts in synthesis SrBi2Nb2O9 aurivillius phase doped with Ba2+ and La3+ using molten salts method

Hydrothermal synthesis of ABi2Ta2O9Aurivillius phase: A comparative study of A-site cation size on structure, dielectric, optical properties

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